Overview
- Balboa Productions announced development of the 4MK series on May 19, 2026, naming Channing Powell as showrunner, writer and executive producer and listing Sylvester Stallone and D. Matt Geller as executive producers.
- The adaptation will draw from Barker’s original 4MK trilogy plus a newly announced prequel trilogy, with the first prequel installment, The First Scarlet Door, scheduled for worldwide release on September 22.
- Barker’s novels center on Detective Sam Porter hunting the Four Monkey Killer, a ritualistic murderer whose crimes are framed around the maxim 'hear no evil, see no evil, speak no evil' and a hidden agenda of exposing corruption.
- Key production details have not been revealed: no distributor or platform, no cast, no production start date and no episode order have been announced.
- Powell’s genre TV background and Balboa’s recent high-profile projects position 4MK for a potential franchise and premium series treatment, but the books’ graphic material could shape platform choice, content ratings and audience expectations.