Research Desk / Media Impact Index / Something Is Killing the Children #1

MEDIA IMPACT STUDY · A DEVELOPMENT CYCLE WITHOUT A RELEASE

Something Is Killing the Children #1

CGC 9.8 NM/M · Universal · BOOM! Studios, 2019

Hollywood kept circling Erica Slaughter.
The market moved before it arrived.

A first-print CGC 9.8 sales timeline testing whether repeated TV-development news around Something Is Killing the Children #1 corresponded with changes in recorded value.

Certified Comic Shop ResearchCaptured 2026-09-19 (ET)Sources & methodology ↓

01 / THE STUDY TIMELINE

The biggest run started before the Netflix announcement.

2020—2026

1,335 recorded sales. Five screen-development milestones. The timeline separates a powerful collector run from the news that followed it.

Individual saleMonthly medianDated milestoneBaseline: $700
Something Is Killing the Children #1 CGC 9.8 Universal — monthly medians and dated events$0$400$800$1,200$1,600$2,000$2,4002020202120222023202420252026Sale price ($, as displayed by GPA)2020-01-08: $462020-01-08: $382020-01-12: $402020-02-06: $402020-02-24: $592020-03-03: $552020-03-27: $512020-04-02: $502020-04-06: $952020-04-20: $1002020-04-22: $1252020-04-29: $1402020-05-23: $952020-05-30: $812020-05-31: $1432020-06-04: $1192020-06-04: $1192020-06-07: $1392020-06-11: $1192020-06-13: $1272020-06-17: $1802020-06-17: $1802020-06-18: $1202020-06-19: $1352020-06-21: $1252020-06-21: $1352020-06-22: $1202020-06-23: $1302020-06-23: $1302020-06-23: $1502020-06-25: $1802020-07-01: $1702020-07-03: $1852020-07-03: $1752020-07-10: $2442020-07-10: $2572020-07-11: $2752020-07-12: $2262020-07-15: $2492020-07-16: $2602020-07-17: $2782020-07-30: $2752020-07-30: $2502020-08-01: $2502020-08-01: $2752020-08-04: $2832020-08-07: $2752020-08-14: $4002020-08-17: $2752020-08-21: $3502020-08-21: $3452020-08-23: $2812020-08-25: $3302020-08-25: $3132020-08-25: $2502020-08-28: $3382020-08-30: $3332020-09-01: $3252020-09-06: $2682020-09-06: $2552020-09-06: $3102020-09-07: $2662020-09-08: $3052020-09-09: $2552020-09-11: $3082020-09-12: $3202020-09-14: $2852020-09-14: $2752020-09-16: $3002020-09-16: $2942020-09-19: $3002020-09-19: $2882020-09-19: $3002020-09-20: $3022020-09-20: $2002020-09-23: $2802020-09-23: $2952020-09-26: $3052020-09-26: $2482020-09-27: $2062020-09-27: $2142020-09-27: $2552020-09-27: $2522020-09-27: $3002020-09-28: $2602020-09-28: $2562020-09-28: $2562020-09-28: $2652020-09-29: $2042020-09-29: $2032020-09-30: $2652020-09-30: $2802020-09-30: $3052020-09-30: $2802020-09-30: $2652020-09-30: $2652020-09-30: $2032020-10-01: $2712020-10-01: $2902020-10-02: $2752020-10-03: $2702020-10-03: $2752020-10-03: $2652020-10-03: $2852020-10-03: $2702020-10-05: $2492020-10-05: $2852020-10-05: $2842020-10-05: $3402020-10-06: $3092020-10-08: $2812020-10-09: $2662020-10-09: $2522020-10-09: $2802020-10-11: $2802020-10-11: $2702020-10-11: $2482020-10-12: $2852020-10-13: $2752020-10-13: $2852020-10-15: $2702020-10-17: $2502020-10-17: $2702020-10-17: $2752020-10-19: $2702020-10-20: $3002020-10-23: $3002020-10-23: $3002020-10-23: $2852020-10-24: $2952020-10-24: $3002020-10-24: $2902020-10-27: $2952020-10-27: $3002020-10-29: $3402020-10-29: $3002020-10-30: $2702020-10-31: $2852020-10-31: $3202020-10-31: $2852020-11-01: $3002020-11-02: $3002020-11-03: $3002020-11-04: $3252020-11-05: $2852020-11-07: $3002020-11-07: $3052020-11-07: $3012020-11-07: $2852020-11-07: $3502020-11-08: $3002020-11-09: $3602020-11-11: $2802020-11-12: $2902020-11-13: $3002020-11-14: $2952020-11-14: $3012020-11-15: $3002020-11-16: $2902020-11-18: $2622020-11-18: $2752020-11-19: $2802020-11-20: $2682020-11-20: $2802020-11-21: $2552020-11-22: $2602020-11-23: $3052020-11-23: $2902020-11-23: $3192020-11-24: $3052020-11-26: $2902020-11-26: $2902020-11-26: $2702020-11-27: $2752020-11-28: $3002020-11-28: $3012020-11-28: $2902020-11-28: $4052020-11-29: $3052020-11-29: $3002020-11-29: $3002020-11-29: $2852020-11-30: $2952020-11-30: $2802020-11-30: $2952020-12-02: $3102020-12-02: $2852020-12-02: $2852020-12-03: $3102020-12-03: $3102020-12-04: $3052020-12-05: $3102020-12-05: $3002020-12-06: $3252020-12-06: $3302020-12-07: $2952020-12-09: $3052020-12-12: $2992020-12-13: $3092020-12-13: $3102020-12-14: $3002020-12-18: $3102020-12-19: $3102020-12-19: $2952020-12-20: $3002020-12-21: $2702020-12-24: $3032020-12-24: $3102020-12-29: $3002020-12-31: $3002020-12-31: $3102020-12-31: $3252020-12-31: $3262021-01-02: $2852021-01-02: $3402021-01-03: $3402021-01-04: $3252021-01-07: $3402021-01-08: $3502021-01-08: $3502021-01-09: $4252021-01-09: $4252021-01-09: $3502021-01-09: $3752021-01-11: $4202021-01-12: $3752021-01-14: $3602021-01-14: $3552021-01-16: $3312021-01-17: $4302021-01-19: $4122021-01-23: $3602021-01-24: $3802021-01-27: $4262021-01-29: $4402021-01-30: $4482021-01-30: 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$6502022-09-27: $6752022-09-28: $6602022-10-01: $6612022-10-04: $6162022-10-08: $6002022-10-08: $6102022-10-08: $6302022-10-12: $6512022-10-12: $5852022-10-13: $7002022-10-14: $6502022-10-20: $7252022-10-21: $6302022-10-22: $7502022-10-23: $7002022-10-27: $5402022-10-27: $5222022-10-29: $5902022-10-30: $5622022-10-30: $6102022-10-30: $6002022-11-03: $6202022-11-07: $5522022-11-08: $6102022-11-09: $5522022-11-11: $5852022-11-16: $5682022-11-23: $5502022-11-26: $5202022-11-27: $5552022-11-28: $5502022-12-01: $5002022-12-02: $6192022-12-05: $5002022-12-05: $4992022-12-09: $6152022-12-09: $5502022-12-10: $5002022-12-11: $4802022-12-12: $5282022-12-15: $5652022-12-15: $5012022-12-16: $5552022-12-18: $6002022-12-24: $5302023-01-01: $6252023-01-02: $5502023-01-03: $6302023-01-03: $6252023-01-04: $4692023-01-08: $5852023-01-08: $6252023-01-09: $5192023-01-15: $5612023-01-21: $4302023-01-22: $5602023-01-23: $5952023-01-25: $5792023-01-28: $5682023-01-29: $6072023-01-29: $6152023-01-31: $5592023-01-31: $5752023-02-04: $5922023-02-05: $6102023-02-05: $5502023-02-05: $6182023-02-07: $5502023-02-11: $6222023-02-12: $5602023-02-12: $6002023-02-14: $5602023-02-14: $6402023-02-15: $5502023-02-17: $6312023-02-18: $6172023-02-18: $7002023-02-21: $5752023-02-23: $5502023-02-23: $8002023-02-23: $7502023-02-23: $7002023-02-23: $7002023-02-23: $6152023-02-24: $9002023-02-24: $8192023-02-24: $8002023-02-24: $6552023-02-25: $5502023-02-25: $9542023-02-27: $8802023-02-27: $8502023-02-28: $9262023-02-28: $9152023-03-01: $6792023-03-03: $6602023-03-03: $7752023-03-04: $7352023-03-05: $8182023-03-05: $6952023-03-05: $8102023-03-05: $8002023-03-05: $8002023-03-06: $6302023-03-07: $7952023-03-08: $6992023-03-09: $6752023-03-10: $7002023-03-11: $7872023-03-11: $8152023-03-12: $7102023-03-12: $7002023-03-12: $8002023-03-18: $6112023-03-19: $6182023-03-19: $7002023-03-20: $7402023-03-21: $5802023-03-22: $6352023-03-25: $7502023-03-26: $6502023-03-26: $6802023-03-26: $6202023-03-28: $6902023-03-29: $7002023-03-31: $8002023-04-01: $7632023-04-02: $6802023-04-02: $6132023-04-04: $7302023-04-05: $7252023-04-06: $8002023-04-06: $7802023-04-07: $6402023-04-08: $6002023-04-15: $7112023-04-15: $6702023-04-15: $6502023-04-16: $6852023-04-16: $7022023-04-20: $7502023-04-22: $7702023-04-23: $6752023-04-23: $6502023-04-23: $6502023-04-29: $5762023-04-29: $7002023-04-29: $6852023-04-30: $7492023-05-04: $6182023-05-07: $7002023-05-11: $6702023-05-13: $6802023-05-13: $7002023-05-14: $6502023-05-18: $3372023-05-18: $6702023-05-20: $6352023-05-20: $6992023-05-22: $6502023-05-24: $6752023-05-24: $7402023-05-29: $7132023-05-29: $7022023-05-29: $6152023-06-03: $7362023-06-13: $6902023-06-15: $7202023-06-17: $7152023-06-18: $7312023-06-18: $7752023-06-19: $7152023-06-23: $8002023-06-23: $7802023-06-26: $7102023-06-28: $7002023-07-11: $7152023-07-16: $5762023-07-18: $7802023-07-18: $6992023-07-25: $7802023-07-29: $6982023-08-01: $7202023-08-05: $6752023-08-06: $6052023-08-08: $7002023-08-12: $5602023-08-12: $7752023-08-13: $5302023-08-21: $6502023-08-27: $5702023-08-27: $6002023-09-03: $5502023-09-08: $6502023-09-09: $6612023-09-13: $7002023-09-15: $6452023-09-15: $6252023-09-16: $5752023-09-22: $5752023-09-23: $6192023-09-24: $6302023-09-25: $5522023-09-30: $6002023-10-05: $5622023-10-07: $6102023-10-10: $5852023-10-11: $6992023-10-14: $6202023-10-15: $6002023-10-19: $5702023-10-21: $5852023-10-28: $6302023-10-30: $6752023-11-04: $5902023-11-12: $5502023-11-12: $5802023-11-12: $6552023-11-15: $6552023-11-25: $7002023-11-26: $6652023-12-03: $6652023-12-08: $5392023-12-09: $5702023-12-11: $5812023-12-14: $6892023-12-17: $5862023-12-17: $6802023-12-25: $6002023-12-26: $6022023-12-26: $5502023-12-31: $5552024-01-06: $5762024-01-07: $6062024-01-07: $5052024-01-09: $5602024-01-12: $6102024-01-13: $5762024-01-13: $5552024-01-13: $8002024-01-15: $6002024-01-21: $6052024-01-27: $5652024-01-30: $5752024-02-03: $5502024-02-03: $5612024-02-12: $6002024-02-16: $5502024-02-17: $5342024-02-18: $5852024-02-18: $6252024-02-19: $5502024-02-21: $5852024-02-25: $5652024-03-04: $5752024-03-10: $6072024-03-10: $5652024-03-12: $7472024-03-14: $6502024-03-17: $6022024-03-18: $6252024-03-20: $4902024-03-24: $4962024-03-24: $4752024-03-27: $5202024-03-30: $5902024-04-04: $6002024-04-06: $5872024-04-15: $7652024-04-17: $5452024-04-20: $5502024-04-28: $5172024-04-30: $6002024-04-30: $5802024-05-04: $6102024-05-05: $7002024-05-11: $5262024-05-12: $5152024-05-22: $5992024-05-22: $5802024-05-23: $4902024-05-25: $5252024-05-25: $5652024-05-26: $5112024-05-26: $5002024-05-26: $5002024-05-27: $5002024-06-01: $5002024-06-01: $4852024-06-03: $5502024-06-07: $5502024-06-09: $5202024-06-14: $5472024-06-16: $5602024-06-22: $5702024-06-30: $5802024-07-01: $6002024-07-04: $5502024-07-06: $5752024-07-07: $6002024-07-07: $4802024-07-10: $6002024-07-11: $5552024-07-13: $7502024-07-16: $5752024-07-17: $6362024-07-24: $5952024-07-27: $6112024-08-11: $5202024-08-12: $6002024-08-13: $7752024-08-13: $6002024-08-15: $8252024-08-15: $7452024-08-20: $8002024-08-24: $8252024-08-24: $8752024-08-24: $6502024-08-28: $7102024-08-29: $7652024-09-04: $8002024-09-13: $7992024-09-19: $7002024-09-22: $6352024-10-07: $7002024-10-12: $7082024-10-14: $7452024-10-18: $8502024-10-20: $6952024-10-24: $6852024-10-28: $7502024-11-01: $6502024-11-09: $7412024-11-11: $7052024-11-17: $6902024-11-18: $7352024-11-18: $7002024-11-19: $7602024-11-23: $6832024-11-23: $6502024-11-27: $6952024-12-01: $6502024-12-02: $5502024-12-06: $7252024-12-10: $6072024-12-10: $6072024-12-20: $6672024-12-20: $6632024-12-25: $6452024-12-26: $6952024-12-27: $6912024-12-29: $6812025-01-06: $7002025-01-06: $6582025-01-13: $7502025-01-25: $6702025-01-28: $6102025-01-30: $7202025-01-31: $6152025-02-02: $6792025-02-04: $6752025-02-11: $6202025-02-12: $6202025-02-19: $8002025-02-23: $6502025-03-02: $6142025-03-09: $6752025-03-18: $6752025-03-18: $6752025-03-18: $6002025-03-23: $6432025-03-23: $6272025-03-23: $6002025-03-30: $6152025-04-01: $6402025-04-06: $6392025-04-08: $7732025-04-18: $7312025-04-20: $7152025-04-23: $6502025-05-04: $7002025-05-04: $8002025-05-04: $7502025-05-10: $6392025-05-12: $7152025-05-13: $6882025-05-14: $6302025-05-15: $6952025-05-20: $7202025-05-23: $8852025-06-01: $7202025-06-12: $7312025-06-12: $8292025-06-13: $9402025-06-17: $7252025-06-18: $6852025-06-19: $7112025-06-19: $7252025-06-20: $7452025-06-24: $6502025-06-29: $6202025-06-29: $6052025-07-04: $8002025-07-07: $7352025-07-13: $7112025-07-15: $7002025-07-20: $1,0302025-07-27: $6352025-08-05: $7002025-08-16: $6502025-08-18: $7502025-08-20: $7262025-08-20: $7602025-08-21: $6602025-08-28: $7502025-08-28: $7552025-09-01: $7552025-09-08: $6502025-09-08: $7652025-09-14: $7452025-09-20: $7932025-09-22: $6752025-09-24: $7952025-09-28: $7502025-10-01: $8002025-10-06: $5952025-10-10: $6802025-10-12: $7002025-10-16: $6802025-10-24: $1,4592025-10-24: $7082025-10-25: $8622025-10-25: $8492025-10-26: $7342025-10-27: $7992025-10-27: $8752025-10-28: $9492025-10-29: $9502025-11-05: $8002025-11-06: $9502025-11-08: $8752025-11-08: $8502025-11-09: $7502025-11-11: $9672025-11-13: $9012025-11-16: $7502025-11-18: $7802025-11-18: $8452025-11-25: $9542025-11-28: $8102025-11-29: $8302025-12-01: $8502025-12-02: $8702025-12-04: $7202025-12-08: $9002025-12-08: $8602025-12-16: $9002025-12-18: $7502025-12-24: $8952025-12-26: $8522025-12-27: $8802025-12-29: $8252025-12-31: $9142026-01-03: $8552026-01-04: $9002026-01-08: $9012026-01-09: $9252026-01-09: $9102026-01-13: $7002026-01-16: $8602026-01-17: $8952026-01-20: $8502026-01-25: $9122026-01-25: $9502026-01-25: $8992026-01-25: $1,0002026-02-01: $8502026-02-01: $8502026-02-07: $9602026-02-07: $8772026-02-08: $7252026-02-08: $9002026-02-15: $8002026-02-17: $8252026-02-18: $8002026-02-18: $7002026-02-20: $8502026-02-23: $7362026-02-24: $9002026-02-27: $8752026-02-28: $8552026-03-01: $9002026-03-03: $9052026-03-09: $8352026-03-11: $8002026-03-13: $9392026-03-14: $9252026-03-14: $1,0002026-03-19: $1,0002026-03-21: $9102026-03-21: $8002026-03-22: $3332026-03-25: $1,0802026-03-25: $9202026-03-31: $8502026-03-31: $9342026-04-03: $8652026-04-04: $8612026-04-05: $9002026-04-07: $8502026-04-17: $8702026-04-17: $8502026-04-18: $8162026-04-25: $8932026-04-26: $9662026-05-06: $9502026-05-06: $8502026-05-07: $9252026-05-16: $8752026-05-18: $9502026-05-20: $1,0002026-05-20: $1,0752026-05-25: $9492026-05-29: $9502026-06-01: $9452026-06-16: $8452026-06-21: $9302026-06-27: $8502026-06-29: $9502026-07-11: $9602026-07-14: $9002026-07-17: $9002026-07-19: $9092026-07-20: $8502026-07-23: $9962026-07-23: $9002026-07-24: $8962026-07-30: $9002026-08-01: $8902026-08-02: $9002026-08-04: $8552026-08-04: $6132026-08-07: $8502026-08-08: $8452026-08-09: $8592026-08-12: $6082026-08-13: $8002026-08-15: $8202026-08-15: $8502026-08-29: $9102026-09-05: $9952026-09-05: $1,0752026-09-07: $1,0002026-09-07: $8252026-09-08: $8252026-09-11: $9631. Netflix development2021-07-092. Flanagan exits2022-10-073. New creators2023-02-234. Project update2025-08-275. Blumhouse rights2025-10-24Recorded sales / month (peak: 58)2020-01-01: 3 sales2020-02-01: 2 sales2020-03-01: 2 sales2020-04-01: 5 sales2020-05-01: 3 sales2020-06-01: 16 sales2020-07-01: 12 sales2020-08-01: 14 sales2020-09-01: 40 sales2020-10-01: 43 sales2020-11-01: 45 sales2020-12-01: 28 sales2021-01-01: 25 sales2021-02-01: 37 sales2021-03-01: 36 sales2021-04-01: 38 sales2021-05-01: 45 sales2021-06-01: 32 sales2021-07-01: 58 sales2021-08-01: 32 sales2021-09-01: 27 sales2021-10-01: 25 sales2021-11-01: 23 sales2021-12-01: 19 sales2022-01-01: 22 sales2022-02-01: 23 sales2022-03-01: 29 sales2022-04-01: 20 sales2022-05-01: 15 sales2022-06-01: 11 sales2022-07-01: 15 sales2022-08-01: 17 sales2022-09-01: 16 sales2022-10-01: 19 sales2022-11-01: 10 sales2022-12-01: 14 sales2023-01-01: 18 sales2023-02-01: 31 sales2023-03-01: 32 sales2023-04-01: 23 sales2023-05-01: 16 sales2023-06-01: 11 sales2023-07-01: 6 sales2023-08-01: 10 sales2023-09-01: 12 sales2023-10-01: 10 sales2023-11-01: 7 sales2023-12-01: 11 sales2024-01-01: 12 sales2024-02-01: 10 sales2024-03-01: 12 sales2024-04-01: 8 sales2024-05-01: 13 sales2024-06-01: 9 sales2024-07-01: 12 sales2024-08-01: 12 sales2024-09-01: 4 sales2024-10-01: 7 sales2024-11-01: 10 sales2024-12-01: 11 sales2025-01-01: 7 sales2025-02-01: 6 sales2025-03-01: 9 sales2025-04-01: 6 sales2025-05-01: 10 sales2025-06-01: 12 sales2025-07-01: 6 sales2025-08-01: 8 sales2025-09-01: 8 sales2025-10-01: 14 sales2025-11-01: 13 sales2025-12-01: 12 sales2026-01-01: 13 sales2026-02-01: 15 sales2026-03-01: 15 sales2026-04-01: 9 sales2026-05-01: 9 sales2026-06-01: 5 sales2026-07-01: 9 sales2026-08-01: 12 sales2026-09-01: 6 salesSource: GPAnalysis · 1,332 recorded sales · monthly medians · September 2026 is partial through September 11 in the supplied GPA rows.

Dots retain recorded sale dates. Monthly medians sit at mid-month; connecting lines do not estimate daily prices. Lines connect observed medians across periods with no sales; no values are calculated for those empty periods. Bars show recorded transactions per period. September 2026 is partial through September 11 in the supplied GPA rows. Scroll horizontally on smaller screens.

PRE-ANNOUNCEMENT BASELINE$700

Jan–Jun 2021 pooled median213 sales

30 DAYS BEFORE NETFLIX NEWS$800

43 recorded sales43 sales

30 DAYS AFTER NETFLIX NEWS$1,147

38 recorded sales38 sales

LATEST FULL MONTH$850

August 2026 median12 sales

WHAT THE SALES SHOW

The first TV headline landed
inside an existing boom.

The six-month January–June 2021 baseline was $700 across 213 sales, but the monthly median had already climbed from $375 in January to $1,200 in May before the July 9 Netflix development report. That makes the adaptation news a poor explanation for the run's origin.

Locally, the 30-day median did rise from $800 before the Netflix report to $1,147 after it, a +43.4% move. The timing is consistent with added attention, but it overlaps a highly volatile collector market that was already repricing the book.

Later development headlines produced smaller or mixed moves. Flanagan's October 2022 exit was followed by a −14.7% 30-day median change. The February 2023 attachment of Baran bo Odar and Jantje Friese was followed by +25.8%. Tynion's August 2025 status update produced +5.9%, while the October 2025 Blumhouse rights announcement was followed by +21.4%.

02 / CATALYST BY CATALYST

What changed around each event?

Median prices and recorded volumes in the 30 calendar days before and after each date. Event-day sales are excluded. Overlapping windows are not independent effects.

MilestoneBefore medianAfter medianPrice changeVolume change
1
$80043 sales$1,14738 sales+43.4%-11.6%
2
$72115 sales$61518 sales-14.7%+20.0%
3
$59221 sales$74536 sales+25.8%+71.4%
4
$7136 sales$7559 sales+5.9%+50.0%
5
$7007 sales$85017 sales+21.4%+142.9%

Samples below five transactions are flagged. Percentage changes are descriptive and do not establish causation. Trading is frequent enough around the major adaptation milestones for monthly medians and 30-day event windows. All principal event windows exceed the five-observation warning threshold, while the full timeline is retained to distinguish screen-news timing from the comic's pre-existing collector run.

03 / THE LONG VIEW

A boom, a retracement, then a gradual rebuild.

2019—2026

The lifetime overview reproduces GPA's rounded annual averages for all eight listed years. The 2019 average is based on only three recorded sales, and 2026 is partial.

Something Is Killing the Children #1 CGC 9.8 Universal — lifetime annual averagesDetailed study window$0$200$400$600$800$1,00020192020202120222023202420252026Sale price ($, as displayed by GPA)Source: GPA annual summaries · 2026 partial · Averages, not individual sales

Annual averages reproduce GPA’s rounded summaries and differ from the medians above. The capture year is partial.

RESEARCH NOTES

Traceable data.
Defined comparisons.

Recorded transactions, documented exclusions, and sourced events.

Capture audit

GPAnalysis ↗ · 1335 captured rows · 1335 eligible rows · 1332 plotted rows. Capture scope: lifetime. Individual transactions cover every annual summary through the September 19, 2026 capture; 2026 is partial through September 11 in the supplied GPA rows.

Method selection

Trading is frequent enough around the major adaptation milestones for monthly medians and 30-day event windows. All principal event windows exceed the five-observation warning threshold, while the full timeline is retained to distinguish screen-news timing from the comic's pre-existing collector run.

Sales & coverage

Source: GPAnalysis ↗. The supplied capture contains all 1,335 individual rows listed for this category from 2019 through September 11, 2026: 3 in 2019, 213 in 2020, 397 in 2021, 211 in 2022, 187 in 2023, 120 in 2024, 111 in 2025, and 93 in partial 2026. Every annual row count reconciles to GPA. Transaction counts are recorded sales, not unique physical copies or total-market volume.

Category & calculations

This study uses the user-verified Something Is Killing the Children #1, CGC 9.8 Universal, first printing category only. No rows were excluded from the supplied category. Monthly medians use individual recorded prices. Event windows cover days −30 through −1 and +1 through +30, excluding the event date because sale time is unavailable. The January–June 2021 baseline pools six complete months before the first TV-development report. August 2026 is the latest full month; September is partial.

Interpretation limits

The adaptation changed hands and formats over time. The 2021 event was development news, not a series order. Flanagan's 2022 departure was a development setback, the 2023 event attached new creators, and the 2025 Blumhouse event shifted the property toward a live-action film plus adult animation. These events are not equivalent treatments. Prices are nominal GPA-displayed dollars and are not inflation-adjusted. No broad-market control, hypothesis test, or market-adjusted return is estimated.

Historical event sources

  1. ComicBook.com: Netflix TV adaptation reported in development2021-07-09 · Contemporaneous report that Trevor Macy and Mike Flanagan were developing the property for Netflix; a pilot was in development, not a series greenlight.
  2. TheWrap: Mike Flanagan confirms he is no longer involved2022-10-07 · Flanagan said Netflix chose a different direction. The project was not described as canceled at this point.
  3. TheWrap: Dark creators board Netflix development2023-02-23 · Baran bo Odar and Jantje Friese were attached to develop the adaptation after the earlier creative team departed.
  4. Fangoria: Tynion says the long-gestating show is still alive2025-08-27 · A creator update after a long quiet period; not a greenlight, casting announcement, production start, or release date.
  5. TheWrap: Blumhouse announces film and animated-series development2025-10-24 · The screen strategy changed: Blumhouse announced a live-action feature and adult animated series, rather than the earlier Netflix live-action TV development.

Prices are nominal GPA-displayed dollars, not inflation-adjusted. Fees, currency normalization, and individual listings have not been independently audited. Counts are recorded transactions, not unique physical copies or total-market volume. Timing alone does not establish cause; no broad-market control is applied. Certified Comic Shop Research · 2026-09-19.