Richard Crenna as Howard Faloon

Patty Duke as Jan Richards

Vic Morrow as Detective Rausch

Arlene Golonka as Linda

Richard Schaal as George

Peter Bromilow as Taylor

Doreen Lang as Louise

Arch Johnson as Super

Norbert Schiller as Albert

Wright King as Director

Christopher Joy as Doctor

James Gavin as Doorman

Maryesther Denver as Mrs. Ramsey (uncredited)

John Travolta as Man Outside Store (uncredited)

Henry Winkler as Auditioning Actor (uncredited)