Netflix's Spenser Confidential Cast & Character Guide
James Stevens
Published Mar 29, 2026
Who's in Spenser Confidential, and how do you know the main performers? Here's a cast and character guide for Peter Berg's 2020 Netflix film.
Netflix's Spenser Confidential cast is led by two major movie stars, and is filled with an impressive supporting cast to boot. Directed by Peter Berg, the Netflix action comedy is based on Robert B. Parker's novel series of the same name. Spenser Confidential, written by Brian Helgeland and Sean O'Keefe, released on March 6, 2020.
Spenser Confidential on Netflix follows a former Boston cop who's released from prison and investigates corruption within law enforcement. He's aided by long-time friend Henry Cimoli, along with his new roommate, Hawk. As Spenser learns more about secret business deals, he attempts to protect the future of his beloved hometown, all the while keeping an eye on his bitter ex-girlfriend, Cissy.
In Spenser Confidential, Berg reunites with one of his frequent movie collaborators. The supporting cast features an Oscar winner, a Black Panther star, and a popular stand-up comedian. Here's a complete guide to the Spenser Confidential cast and characters.
Mark Wahlberg As Spenser & Winston Duke As Hawk
Mark Wahlberg stars as the main protagonist, a man known only as Spenser. He investigates police corruption after serving jail time for a past assault. Wahlberg achieved popularity due to his role in the 1997 film Boogie Nights. He later earned an Oscar nomination for his supporting performance in The Departed. But beyond those two films, he's appeared in movies such as Planet of the Apes, The Italian Job, The Happening, The Other Guys, and two Transformers installments.
Winston Duke co-stars as Spenser's new roommate, a fighter who lends help at the most appropriate moments. Duke stars as M'Baku in the MCU, and portrayed Gabe Wilson and Abraham in Us.
The Spenser Confidential Supporting Cast
Alan Arkin as Henry Cimoli: Spenser's long-time friend. Alan Arkin is best known for his Oscar-nominated performance in Argo and his Oscar-winning performance in Little Miss Sunshine. Arkin also stars in The Kominsky Method.
Iliza Shlesinger as Cissy Davis: Spenser's ex-girlfriend. A stand-up comedian, Iliza Shlesinger portrayed October in Instant Family.
Bokeem Woodbine as Driscoll: Spenser's colleague. Bokeem Woodbine portrayed Mike Milligan in Fargo season 2 and Herman Schultz in Spider-Man: Homecoming.
Marc Maron as Wayne Cosgrove: A reporter at The Boston Globe. Marc Maron hosts the popular WTF with Marc Maron podcast. He also portrays Sam Sylvia in GLOW and briefly appeared in Joker.
Post Malone as Squeeb: Spenser's prison informant. A popular recording artist, Post Malone performed the Grammy-winning song "Sunflower" for the Spider-Man: Into the Spider-Verse soundtrack.
Michael Gaston as Captain John Boylan: Spenser's corrupt superior. Michael Gaston portrayed Dean in The Leftovers and Mark Samson in The Man in the High Castle.
Colleen Camp as Mara: Spenser's trucking school instructor. Colleen Camp has appeared in Wayne's World and Die Hard with a Vengeance.
Donald Cerrone as Big Boy: One of Hawk's sparring partners. Donald "Cowboy" Cerrone is a well-known UFC fighter.
Hope Olaide Wilson as Letitia Graham: The widow of a murdered cop. Hope Olaide Wilson portrayed Miranda "Diamond" Collins in The Fosters.
James DuMont as "Tracksuit Charlie" Bentwood: A corrupt cop. James DuMont portrays Chad in The Righteous Gemstones.
