4MK
As of June 29, 2026, 4MK is a series that is in development. The production companies attached are Balboa Productions, Amazon MGM Studios and MGM Studios. Attached are showrunner Channing Powell; and executive producers Sylvester Stallone and D. Matt Geller. Its listed shoot location is Chicago, IL. Production List last updated this listing on June 29, 2026.
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Project Summary
4MK is a television series adaptation of J. D. Barker's bestselling crime thriller novels, currently in development with Balboa Productions and showrunner Channing Powell. The series will draw from Barker's 4MK trilogy—The Fourth Monkey, The Fifth to Die, and The Sixth Wicked Child—as well as an upcoming prequel trilogy. Set in Chicago, the story follows Detective Sam Porter as he pursues the elusive Four Monkey Killer, a serial murderer guided by the maxim 'hear no evil, see no evil, speak no evil,' who exposes hidden corruption by punishing the guilty through those they love. Powell, who co-created Tales of the Walking Dead and currently serves as co-executive producer on MGM+'s From, will write and serve as showrunner. Sylvester Stallone executive produces through his Balboa Productions alongside D. Matt Geller. Balboa Productions has a first-look deal with Amazon MGM Studios, though no network has been announced for this project. No production start date or casting details have been revealed.
Production Contacts— Members Only
The production office and crew contacts for 4MK are on file at Production List, last updated June 29, 2026, and are available to members. Membership is $29.95 for the first month.
Cast & Crew
Production
| Executive Producer | Sylvester Stallone |
| Executive Producer | D. Matt Geller |
| Showrunner | Channing Powell |
| Executive Producer | Channing Powell |
Writing
| Writer | Channing Powell |
Contact details for each person listed are on file and available to members.
Working on 4MK
4MK is in development. Crew hiring starts once it enters pre-production, usually a few weeks before the shoot date. How productions hire crew · Working as an extra · Reaching the production office
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Source: Production List, published by the Film & Television Industry Alliance. Cite this page as https://www.productionlist.com/production/4mk (last updated Jun 29, 2026).