How to Save a Marriage and Ruin Your Life

Wealthy playboy David Sloane wrongly believes good girl Carol Corman is his best friend's mistress.

• 
  Fielder Cook
• 
  Ray Gosnell Jr.

• 
  Dean Martin
  David Sloane
• 
  Stella Stevens
  Carol Corman
• 
  Eli Wallach
  Harry Hunter
• 
  Anne Jackson
  Muriel Laszlo
• 
  Betty Field
  Thelma
• 
  Jack Albertson
  Slotkin
• 
  George Furth
  Roger
• 
  Katharine Bard
  Mary Hunter
• 
  Woodrow Parfrey
  Eddie Rankin
• 
  Alan Oppenheimer
  Everett Bauer
• 
  Shelley Morrison
  Marcia Borie
• 
  Monroe Arnold
  Wally Hammond
• 
  Claude Stroud
  Hall Satler
• 
  Leon Alton
  Bartender (uncredited)
• 
  Dick Cherney
  Restaurant Patron (uncredited)
• 
  Bruce Chesse
  Groom (uncredited)
• 
  Harry Denny
  Pedestrian (uncredited)
• 
  Dotty Ertel
  Minor Role (uncredited)
• 
  Joe Evans
  Pedestrian (uncredited)
• 
  Dee Gardner
  Bar Patron (uncredited)