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