• 
  Byron Haskin

  regizor

• 
  John Gay

  scenarist

• 
  George Hamilton

  Profesorul Jim Tanner
• 
  Suzanne Pleshette

  Profesorul Margery Lansing
• 
  Richard Carlson

  Profesorul Norman E. Van Zandt
• 
  Aldo Ray

  Bruce
• 
  Arthur O'Connell

  Professor Henry Hallson
• 
  Gary Merrill

  Mark Corlane

• 
  Michael Rennie (I)

  Arthur Nordlund
• 
  George Hamilton

  Professor Jim Tanner
• 
  Miiko Taka

  Mrs. Van Zandt
• 
  Yvonne De Carlo

  Mrs. Sally Hallson
• 
  Celia Lovsky

  Mrs. Hallson
• 
  Ken Murray

  Grover
• 
  Beverly Powers

  Sylvia, party girl

• 
  Nehemiah Persoff

  Professor Carl Melnicker
• 
  Earl Holliman

  Professor Talbot Scott aka Scotty
• 
  Vaughn Taylor

  Mr. Hallson
• 
  Kenner G. Kemp

  Party Extra
• 
  Barbara Nichols

  Flora
• 
  Ken Murray

  Grover