Eli Wallach as Arthur Mason

Julie Harris as Gerrie Mason

Deborah Winters as Maxie Mason

Cloris Leachman as Tina Hoffman

Hal Holbrook as David Hoffman

Nehemiah Persoff as Dr. Salazar

Mike Kellin as Dr. Margolin

Stephen McHattie as Artie Mason

Don Scardino as Sandy Hoffman

Rue McClanahan as Della

Sandy Alexander as Elliott

Bruce Scott as Jack

Matthew Cowles as Wally

Janet Sarno as Night Nurse

Paul Ganapoler as Club Owner

Marilyn Chris as Discotheque Waitress

Ben Yaffee as Discotheque Owner

Joseph Leon as Price Whitehead

John Batiste as Therapist

Ron Panvini as Party Musician

Bobby Sandler as Party Musician

Robert Gass as Artie's Group (as The Bead Game)

Jim Hodder as Artie's Group (as The Bead Game)

Lassie Sachs as Artie's Group (as The Bead Game)

John Sheldon as Artie's Group (as The Bead Game)

Kenny Westland-Haag as Artie's Group (as The Bead Game)

Rutanya Alda as Nurse (uncredited)

Anthony D. Call as Dr. Lauran (uncredited)

Jane Culley as Nymphomaniac (uncredited)

Anita Dangler as Blonde Mother (uncredited)

Philip Suriano as Motorcycle Gang Member (uncredited)