Skip to main content
John Slattery
★ Acting

John Slattery

Born 1962 · Boston, Massachusetts, USA · Active 1975–2026

John Slattery, born in 1962, is an American actor known for his compelling performances across various genres. In Sleepers (1996), he plays a pivotal role that adds depth to the film's exploration of moral ambiguity and the consequences of vengeance. Slattery's career spans from television to film, but his work in Sleepers highlights his ability to navigate the darker themes of cult cinema. His portrayal resonates within the narrative's gritty landscape, making him a notable figure in the realm of exploitation and drama.

▶ Watch on SassyFlix 1 film available
Sleepers

Sleepers

1996 ★ 7.6
as Carlson (uncredited)

Lorenzo "Shakes" Carcaterra, Tommy Marcano, Michael Sullivan, and John Reilly are childhood friends in Hell's Kitchen in the mid-1960s. Father Robert "Bobby" Carillo, their parish priest, is a father figure to them. However, they start running small errands for local gangster, King Benny. In the summer of 1967, they accidentally injure a man while robbing a hot dog vendor. Sentenced to the Wilkinson Home for Boys in Upstate New York, the boys are physically and sexually abused by guards Sean Nokes, Henry Addison, Ralph Ferguson, and Adam Styler. The abuse changes them and their friendship forever. During their stay at the facility, they participate in Wilkinson's annual football game between the guards and inmates. Michael convinces Rizzo, a black inmate, to play as hard as they can to show the guards they can fight back. He agrees, and helps win the game. Humiliated, the guards inflict severe beatings on the boys, put them in solitary confinement for weeks, and beat Rizzo to death, telling his family he died of pneumonia. In the spring of 1968, shortly before Shakes' release from Wilkinson, he suggests they publicly report the abuse. The others refuse, with Michael asserting that no one would believe them, or care. They then decide never to speak of the abuse — even after they are all released. The night before Shakes is released, Nokes says he and the other guards have arranged a "farewell party", in which they are brutally abused. In 1981, 13 years later, John and Tommy – now career criminals – unexpectedly encounter Nokes, now a private security guard, by chance in a Hell's Kitchen pub. Confronting him, he dismisses the abuse he put them through, and they shoot him dead in front of witnesses. Michael, who has become an assistant district attorney, gets himself assigned to the case; he secretly intends to botch the prosecution and expose what the guards did and Wilkinson's role in the cover up. Michael and Shakes, now a reporter, forge a plan to free John and Tommy and get revenge on the remaining abusers. With the help of others (including King Benny and their childhood friend Carol, a social worker), they carry out their plan using information compiled by Michael on the backgrounds of the former Wilkinson guards. They also hire Danny Snyder, a washed-up, alcoholic lawyer, to defend John and Tommy. The plan will only work if he can damage Nokes' reputation and place John and Tommy at another location at the time of the shooting. Ferguson, when called as a witness for Nokes' character, is forced to admit that he, Nokes, and other guards abused boys. To clinch the case, however, they need a key witness who can give John and Tommy an alibi. Shakes has a long talk with Father Bobby, who resists at first but – after hearing of the abuse – reluctantly agrees to perjure himself. At trial, Father Bobby testifies John and Tommy were with him at a New York Knicks game at the time of the shooting and has three ticket stubs to prove it. As a result, John and Tommy are acquitted. The remaining guards are also punished for their crimes: Addison, now a politician who still molests children, is killed by Little Caesar, a local drug kingpin and Rizzo's older brother; Styler, now a corrupt policeman, is imprisoned for taking bribes and murdering a drug dealer; and Ferguson, a social worker, loses his job and family as a result of his admission in court. Michael, Shakes, John, Tommy, and Carol meet at a bar to celebrate – the last time the four of them are together. Shakes remains a reporter, living in Hell's Kitchen. Michael quits the DA's office, moves to the English countryside, becomes a carpenter and never marries. John drinks himself to death and Tommy is murdered; neither live to see age 30. Carol also stays in Hell's Kitchen as a social worker and has a son, whom she names after the four boys.

Watch Now
Career Highlights Top 6 by popularity · TMDB

Filmography

104 credits
2020s 12 credits
2027
The Auction as Intercom Voice (voice)
Movie
2026
Movie
2026
Vladimir as John
TV ★ 7.0
2025
Nuremberg as Colonel Burton Andrus
Movie ★ 7.5
2025
The Rainmaker as Leo F. Drummond
TV ★ 7.4
2025
The Last Frontier as CIA Senior Officer
TV ★ 7.2
2024
Unfrosted as Ad Man #2
Movie ★ 5.4
2022
Confess, Fletch as Frank Jaffe
Movie ★ 6.2
2021
Girls5eva as John Slattery
TV ★ 5.9
2021
What If...? as Howard Stark (voice)
TV ★ 8.1
2020
NEXT as Paul LeBlanc
TV ★ 7.1
2020
Mrs. America as Fred Schlafly
TV ★ 7.3
2010s 28 credits
2019
Avengers: Endgame as Howard Stark
Movie ★ 8.2
2019
TV ★ 8.0
2019
Modern Love as Dennis
TV ★ 7.4
2019
Harley Quinn as Jason Woodrue (voice)
TV ★ 8.3
2019
Harley Quinn as Jason Woodrue / Floronic Man (voice)
TV ★ 8.3
2018
Movie ★ 6.4
2018
The Romanoffs as Daniel Reese
TV ★ 6.4
2017
Churchill as Dwight Eisenhower
Movie ★ 6.2
2017
The Good Fight as Lyle Bettencourt
TV ★ 7.5
2016
Movie ★ 7.4
2015
Power’s War as Narrator (voice)
Movie ★ 7.0
2015
Ant-Man as Howard Stark
Movie ★ 7.1
2015
Spotlight as Ben Bradlee, Jr.
Movie ★ 7.8
2015
Ted 2 as Shep Wild
Movie ★ 6.3
2015
Movie ★ 2.5
2015
TV ★ 6.4
2015
Documentary Now! as William H. Sebastian
TV ★ 7.1
2015
TV ★ 6.1
2014
Bluebird as Richard
Movie ★ 5.7
2014
Showing Up as Self
Movie ★ 9.2
2014
TV ★ 5.2
2012
Movie ★ 5.1
2012
Movie ★ 7.3
2012
Veep as Charlie Baird
TV ★ 7.5
2011
Movie ★ 6.8
2011
Return as Bud
Movie ★ 6.4
2010
Iron Man 2 as Howard Stark
Movie ★ 6.9
2000s 28 credits
2009
TV ★ 5.9
2009
TV ★ 5.0
2009
The Cleveland Show as Mayor Box (voice)
TV ★ 5.9
2008
Movie
2007
Movie ★ 6.5
2007
Underdog as Mayor
Movie ★ 5.6
2007
Movie ★ 6.5
2007
The Situation as Colonel Carrick
Movie ★ 5.8
2007
Movie
2007
Mad Men as Roger Sterling
TV ★ 8.1
2006
Movie ★ 6.9
2006
30 Rock as Steven Austin
TV ★ 7.5
2006
TV ★ 8.0
2004
Movie ★ 6.4
2004
Movie ★ 7.1
2004
Noise as Detective Rutherford
Movie ★ 7.3
2004
Jack & Bobby as Peter Benedict
TV ★ 7.3
2004
Desperate Housewives as Victor Lang
TV ★ 7.9
2003
Movie ★ 7.3
2003
Mona Lisa Smile as Paul Moore
Movie ★ 6.9
2003
K Street as Tommy Flannegan
TV ★ 4.9
2003
Arrested Development as Doctor Norman
TV ★ 7.9
2002
Bad Company as Roland Yates
Movie ★ 5.5
2002
Movie ★ 5.5
2001
Sam the Man as Maxwell Slade
Movie ★ 3.8
2000
Movie ★ 5.9
2000
Traffic as ADA Dan Collier
Movie ★ 7.1
2000
Ed as Dennis Martino
TV ★ 7.7
1990s 23 credits
1999
Harvest as Sheriff Bill Johnson
Movie ★ 4.3
1999
Judging Amy as Michael Cassidy
TV ★ 7.5
1998
Where's Marlowe? as Kevin Murphy
Movie ★ 5.5
1998
Movie ★ 4.1
1998
TV ★ 8.1
1998
Will & Grace as Sam Truman
TV ★ 6.9
1998
Maggie as Dr. Richard Meyers
TV ★ 9.3
1998
Sex and the City as Bill Kelley
TV ★ 7.4
1997
Red Meat as Stefan
Movie ★ 3.8
1997
Movie ★ 5.0
1997
Feds as Michael Mancini
TV ★ 7.0
1996
Eraser as FBI Agent Corman
Movie ★ 6.1
1996
Lily Dale as Will Kidder
Movie ★ 3.7
1996
Sleepers as Carlson (uncredited)
Movie ★ 7.6
1996
City Hall as Intel Detective - George
Movie ★ 6.0
1995
TV ★ 7.1
1994
Party of Five as Jay Mott
TV ★ 7.0
1991
Before the Storm as Graham Parker
Movie ★ 9.0
1991
Under Cover as Graham Parker
Movie ★ 8.0
1991
Homefront as Al Kahn
TV ★ 5.6
1991
Under Cover as John Slattery
TV ★ 7.5
1990
Law & Order as Arlen Levitt
TV ★ 7.3
1990
Law & Order as Dr. Richard Shipman
TV ★ 7.3
1980s 3 credits
1989
The Simpsons as Robert Marlowe (voice)
TV ★ 8.0
1988
TV ★ 7.5
1988
The Dirty Dozen as Pvt. Dylan Leeds
TV ★ 7.5
1970s 1 credit
1975
Saturday Night Live as Self - Cameo (uncredited)
TV ★ 6.9
Crew Credits
2020s 3 credits
2026
Movie
2023
Movie ★ 5.8
2023
Movie ★ 5.8
2010s 5 credits
2016
Love Director
TV ★ 7.1
2014
God's Pocket Screenplay
Movie ★ 5.8
2014
Movie ★ 5.8
2014
Movie ★ 5.8
2014
Movie ★ 6.0
2000s 1 credit
2007
Mad Men Director
TV ★ 8.1