• 
• Helen Hayes
• Mrs. Howard V. Larue III
  

• 
• Brandon de Wilde
• Boy
  Howay
  

Replacement

• 
• Jules Munshin
• Poison Eddie Schellenbach
  

• 
• Minnette Barrett
• Mrs. Schellenbach
  

• 
• Ernest Borgnine
• Nelson
  

• 
• Ann Buckles
• Fairy
  

• 
• Solen Burry
• First Policeman
  

• 
• Mildred Chandler
• Grace Lewis
  

• 
• Irwin Corey
• Dirty Joe
  

• 
• Marga Ann Deighton
• Maude Lewis
  

• 
• Elsa Freed
• Crone
  

• 
• Fred Gwynne
• Stinker
  

• 
• William Lanteau
• Waiter
  

• 
• Enid Markey
• Evva Lewis
  

• 
• Mary Michael
• Carrie
  

• 
• Lydia Reed
• Mimi
  

• 
• Robert Sagalyn
• Second Policeman
  

• 
• Paula Trueman
• Sybil
  

• 
• Iggie Wolfington
• Chef
  

• 
• Solen Burry
• Dirty Joe
  Poison Eddie Schellenbach
  

• 
• Mary Chase
• Writer
  

• 
• Mischa Tulin
• Background Music (played on the Theremin)
  

• 
• Joseph Buloff
• Director
  

• 
• Lester Polakov
• Scenic Design
  Lighting Design
  

• 
• Lucinda Ballard
• Costume Design
  

• 
• Frederic de Wilde
• Stage Manager
  

• 
• Robert Sagalyn
• Assistant Stage Manager
  

• 
• Al Saxe
• Assistant Stage Manager
  

• 
• Paul Morrison
• Technical Director
  

• 
• Oscar E. Olesen
• General Manager
  

• 
• Howard Kussell
• Company Manager
  

• 
• Barry Hyams
• Press Representative
  

• 
• Martin Shwartz
• Associate Press Representative
  

• 
• Alice Venezky
• Advertising
  

• 
• The American National Theatre and Academy
• Producer