Michael Shannon
Richard Kuklinski
Winona Ryder
Deborah Kuklinski
Ray Liotta
Roy Demeo
Chris Evans
Robert Pronge
David Schwimmer
Josh Rosenthal
James Franco
Marty Freeman
Stephen Dorff
Joey Kuklinski
Robert Davi
Leo Marks
John Ventimiglia
Mickey Scicoli
Danny A. Abeckaser
Dino Lapron
Ryan O'Nan
Terry Franzo
McKaley Miller
Anabel
Hector Hugo
Tender Bar Earl
Zoran Radanovich
Jimmy
Shira Vilensky
Coffee Shop Waitress
Kelly Lind
Hospital Nurse
John P. Fertitta
Uncle Bill
Erin Cummings
Ellen
Jimmy Lee Jr.
Homeless Man
Johnny Martin
Mareilli
Nick Gomez
Alvaro
Brian Kinney
Slick BMW Guy
Ashlynn Ross
Alex
Weronika Rosati
Livi
Christa Campbell
Adele
Alexandra Doke
Park Little Girl
Bill Martin Williams
Club Maitre D'
Lindsay Clift
Club USA Dance Partner
Katarzyna Wolejnio
Romy
Jay Giannone
Dominick Provenzano
Freddy Bosche
Detective Beaumont
Tim Bell
Cop
Garrett Kruithof
Stanley Kuklinski
Ray Gaspard
Dennis
Juan Michael Konshuk-Mas
Mr. Freezy's Son
Ehud Bleiberg
Trial Judge
Jonathan Vender
Trial Judge (voice)
Tommy Alastra
Documentary Interviewer (voice)
Gavin Casalegno
Roller Skater (uncredited)
Joy Leigh
Restaurant Patron (uncredited)