Martin Balsam
— Ira Davidoff
Patty Duke
— Sue Davidoff
Doris Roberts
— Marion Davidoff
Rose Gregorio
— Mrs. Eberhardt
James Daly
— Arthur Huston
Jon Korkes
— Randolph
Dick Anthony Williams
— Anthony
Tom Aldredge
— Frank Eberhardt
David Spielberg
— Louis Kellogg
James Staley
— Paul Temperson
Peter Masterson
— Lee Gardner
Milt Kogan
— Phil Curry
Ivan Bonar
— Russ Whitman
Susan Adams
— Peggy McCall
Shelby Balik
— Chrissie
Richard LePore
— Fire Captain
Lieux Dressler
— Housewife
Nina Wilcox
— First Woman
Louis St. Louis
— Conductor
Bob Harks
— Fireman (uncredited)
Dan Olivo
— Baby (uncredited)