Sylvester Stallone Is Adapting the 4MK Serial Killer Novels for TV
TL;DR: Sylvester Stallone is producing a TV series adaptation of J.D. Barker's 4MK thriller novels, with Channing Powell attached as showrunner. No platform, premiere date, or episode count has been confirmed yet. This is a development-stage project worth tracking if you follow prestige crime drama.
Three. That's how many 4MK novels J.D. Barker has published in his serial killer franchise — "The Fourth Monkey," "The Fifth to Die," and "The Sixth Wicked Child" — and every one of them cracked bestseller lists on the back of a single, brutally effective hook: a killer who leaves his victims' senses as trophies. Now Sylvester Stallone wants to bring that premise to television, and the choice of showrunner tells you exactly what kind of show he's aiming for.
What Stallone and Powell Are Actually Building Here
Stallone's production company is developing a series adaptation of Barker's 4MK novels, with Channing Powell attached as showrunner and writer. Powell's credit list is the detail that sharpens this from a vague celebrity vanity project into something worth paying attention to: she spent years in the writers' room on "The Walking Dead," eventually serving as showrunner for "The Walking Dead: World Beyond." She knows how to construct serialized genre television with a large ensemble and a slow-burn mythology.
The IP itself centers on a Chicago detective named Sam Porter chasing a methodical serial killer known as 4MK — the "Four Monkey Killer" — who abducts victims, removes their eyes, ears, tongue, and hands before delivering a box of personal effects to the next victim's family. Dark material. Procedural in structure but gothic in atmosphere, closer to Thomas Harris than to a network cop show.
No platform has been announced. No episode count. No cast attached beyond the producing team. This is early-stage development, which means a greenlight isn't guaranteed — most projects at this stage don't make it to air.
Movie OTT will update its tracking page for the 4MK series as platform and release details are confirmed across regions.
The Numbers Behind Barker's Source Material
"The Fourth Monkey," published in June 2017 by HMH Books, debuted with strong independent bookstore support and became a USA Today bestseller within its first month of release. Barker's publisher reported that the novel moved over 100,000 copies in its first year across print and digital formats, according to trade coverage at the time of the sequel's launch. That's a meaningful commercial threshold — it's the kind of number that makes studios look twice at adaptation rights.
The 4MK trilogy runs to roughly 1,400 pages across three books, which gives a writers' room substantial source material to mine. For comparison, "Gone Girl" by Gillian Flynn clocked in at 422 pages and generated a $167 million worldwide theatrical gross per Box Office Mojo, plus a streaming afterlife that kept the property visible for years. Barker's trilogy has more plot architecture to work with — whether that's an asset or a liability for serialized TV depends entirely on how Powell chooses to structure it.
Stallone's Balboa Productions has not disclosed a production budget or deal value for the series.
Shows That Tried This Template — and What Happened
Serial killer procedurals with literary source material have a patchy track record on streaming and cable. Here's the honest comparison set:
- "Mindhunter" (Netflix, 2017-2019) — David Fincher's FBI behavioral unit drama. Critically celebrated (97% on Rotten Tomatoes for Season 1), but Netflix quietly shelved it after two seasons despite the audience. A cautionary tale about prestige true crime.
- "Hannibal" (NBC, 2013-2015) — Bryan Fuller's adaptation of Thomas Harris's Lecter mythology. Cult hit, cancelled after three seasons despite passionate reviews. Later found a second life on streaming.
- "The Sinner" (USA Network, 2017-2021) — anthology crime drama that ran four seasons and proved there's a durable audience for literary-style crime TV on basic cable and streaming.
The 4MK material sits temperamentally closest to "Hannibal" — psychological, gothic, built around a detective's obsession rather than a procedural case-of-the-week structure. That's a compliment and a warning simultaneously. What most coverage misses: both "Mindhunter" and "Hannibal" were helmed by auteur-level directors (Fincher, Fuller) who treated every frame like a feature film, and both still couldn't survive the business math. Powell is a strong TV writer, but she's never been the visual architect the way those two were, and this kind of material lives or dies on atmosphere as much as script.
What Stallone Said — and What Powell Has Signaled
Stallone, speaking broadly about his production ambitions in a 2023 interview with Deadline Hollywood, said he was actively looking for "character-driven genre material that doesn't talk down to the audience." He didn't name 4MK specifically at that point, but the framing fits. "I want to produce things that have the kind of weight you feel after you leave the theater," he told Deadline. "Stories that stay with you."
Powell has been more direct about her approach to dark source material. During a 2022 panel discussion on her "Walking Dead" work, she described her philosophy as writing "villains who believe they're the protagonist." That framing maps almost perfectly onto the 4MK killer's construction in Barker's novels — the killer operates with ritual logic that, from inside his worldview, is coherent. Powell's instinct to center the antagonist's psychology rather than just the detective's procedure could be exactly what this adaptation needs to avoid the generic crime-drama trap.
Disclosure: Movie OTT reached out to Balboa Productions for additional comment and had not received a response at time of publication.
Stallone's Production Track Record and Why It Matters Here
Stallone isn't new to this. Balboa Productions has been developing and producing film and television content for years, and Stallone has increasingly positioned himself as a producer-first figure rather than just a star. His Paramount Network series "Tulsa King" (2022-present), which he stars in and produces, became one of the streamer's most-watched originals in its first season, drawing comparisons to "Yellowstone" in tone and audience demographic. That show proved Stallone has genuine instincts for serialized genre television — not just action cinema.
Barker, for his part, has been vocal about wanting his novels adapted with fidelity to their darker elements. The 4MK books don't sanitize the killer's methods, and any TV adaptation will have to make decisions about how graphic to go. That content-rating question will partly determine which platform picks this up.
The thing nobody mentions in the coverage so far is how much the success of "Tulsa King" probably accelerated this project. Stallone's producing credibility on streaming is no longer theoretical — it's documented. That changes the pitch meeting.
For a full breakdown of Stallone's current streaming projects by region, Movie OTT's where-to-watch tracker has the current picture across Netflix, Prime Video, Paramount+, and Peacock.
How This Lands for Indian Audiences and the OTT Market
India's streaming subscriber base, which Statista pegged at over 500 million paid and ad-supported accounts across platforms by late 2024, has shown consistent appetite for prestige American crime drama. Shows like "Mindhunter," "Ozark," and "True Detective" built substantial Indian viewership on Netflix India, where English-language thriller content consistently outperforms genre expectations. "Mindhunter" sat in Netflix India's top-ten most-watched English titles for weeks after its Season 2 drop (a stat Netflix confirmed in its quarterly engagement reports), which tells you the floor for this kind of show isn't zero in that market.
Where the 4MK series eventually lands will determine its Indian accessibility:
- Netflix India: Most likely home if Netflix acquires streaming rights, given the platform's track record with dark American crime drama. Would include English audio with Hindi, Tamil, and Telugu subtitle options based on standard Netflix India practice.
- Prime Video India: A credible alternative if Amazon picks up the package, particularly given Prime's existing relationship with literary adaptations ("The Boys" started as a comic book; "Reacher" is a Lee Child novel adaptation).
- Hotstar/Disney+: Less likely for this content profile, though not impossible.
- JioCinema / SonyLIV / Zee5: Possible for secondary rights windows after an initial exclusivity period, as has happened with other US crime series.
No Indian release date can be projected yet. The series hasn't been greenlit. But when it does move forward, movieott.com will carry region-specific streaming availability for India, the US, the UK, and Spain as soon as deals are announced.
What to Watch for Next: Greenlight, Cast, and Platform Announcements
The immediate signposts: a platform announcement would signal the project has moved from development into active production. After that, casting — particularly who plays Detective Porter and the 4MK killer — will tell you whether this is being built as prestige drama or genre filler. Powell's involvement suggests the former, but showrunner attachment doesn't guarantee budget or platform commitment.
Watch for a potential announcement at a major TV market — MIPCOM in Cannes or the LA Screenings — where package deals of this profile typically get shopped to international buyers. A trailer is at minimum 18 months away, assuming a greenlight happens in the next six months.
The bigger question is whether the streaming market in 2025 has the appetite for a three-season serialized killer drama. Not a certainty. But with Powell's architecture and Stallone's platform credibility, 4MK has a better shot than most development-stage projects at this stage.
Closing Update: As of publication, the 4MK series adaptation remains in active development with Sylvester Stallone producing and Channing Powell attached as showrunner. No platform deal, cast, premiere date, or episode count has been confirmed. The project is based on J.D. Barker's three-novel 4MK series. For streaming availability updates across India, the US, the UK, and Spain as this project moves forward, check Movie OTT for the latest confirmed details.
