Danny DeVito

Sam Stone

Bette Midler

Barbara Stone

Judge Reinhold

Ken Kessler

Helen Slater

Sandy Kessler

Anita Morris

Carol Dodsworth

Bill Pullman

Earl James Mott

William G. Schilling

Chief Henry Benton

Art Evans

Lt. Bender

Clarence Felder

Lt. Walters

J.E. Freeman

Bedroom Killer

Gary Riley

Heavy Metal Kid

Frank Sivero

The Mugger

Phyllis Applegate

Loan Officer

Jeannine Bisignano

Hooker in Car

Jim Doughan

Cop at Sam's House

Christopher J. Keene

Cop at Jail

Arnold F. Turner

Cop with Killer Picture

Bob Tzudiker

Sam's Attorney

Janet Rotblatt

Secretary to Chief of Police

Charlotte Zucker

Judge

Art Bonilla

Waiter

Phil Hartman

Newsreader (voice) (uncredited)