Martin Sheen as Eddie Zigo

Héctor Elizondo as Father George

Matt Clark as John Hubbard

Jennifer Salt as Ann Zigo

Eddie Egan as Tom Duncan

Robert Trebor as David Berkowitz

Val Avery as Guido Pressano

Joe Spinell as Jim Halsey

Victor Arnold as Nick Zigo

Ann Talman as Susan Zigo

Vince Grant as Ed Zigo Jr.

Bernie McInerney as Dr. Miller

Dick Latessa as 'Boss' Tom Messenger

Sam McMurray as Morrison

Paul Jabara as Henry

Larry Atlas as Dan

Beege Barkette as Henry's Wife

Jim Borrelli as Tisch

James Canning as Roberts

Jane Cronin as Woman with Dog

Gina DeAngeles as Grandmother

Rosemary De Angelis as Nina

Harold Guskin as Hospital Administrator

Lucinda Jenney as Mary

Sugar Johnson as Young Boy

Eriq La Salle as Bobby

Joe Lisi as Patrolman

John McCurry as Toll Taker

Kate Mulligan as Kate

Pam Nahal as Sharon

Antonia Rey as Madame Elena

Vincent Russo as Ringleader

Ann Sachs as Betty

Lauren Sautner as Little Girl

John Scott Martin as Hector

Marvin Scott as Marvin Scott

Ben Siegler as Steve

Andrew Spathis as Constantine

Fritz Sperberg as Young Doctor

D. B. Sweeney as Mike

Mark Tenore as Kenny

Mickey Treanor as Donahue

Martin Vidnovic as Karl

Olivia Ward as Nurse #1

Caryn West as Ronnie / Veronica

Ed Zigo as Primary Negotiator

Thomas Calabro as Zigo's Nephew (uncredited)

Joe Chiaramonte as Tommy (uncredited)

Valerie Swift as Hooker (uncredited)

Jude Ciccolella as Detective O'Malley (uncredited)

Daniel Ahearn as Task Force Cop (uncredited)

Charlie Sheen as Man Shaving (uncredited)

Sonny Grosso as Man in Restaurant (uncredited)