• 
  John Guillermin

  regizor

• 
  Philip H. Reisman Jr.

  scenarist

• 
  George Peppard

  P.J. Detweiler
• 
  Raymond Burr

  William Orbison
• 
  Gayle Hunnicutt

  Maureen Preble
• 
  Brock Peters

  Waterpark
• 
  Wilfrid Hyde-White

  Billinge Browne
• 
  Jason Evers

  Jason Grenoble

• 
  Coleen Gray

  Betty Orbison
• 
  Susan Saint James

  Linette Orbison
• 
  Severn Darden

  Shelton Quell
• 
  Jane Van Duser

  Elinor Silene
• 
  George Furth

  Sonny Silene
• 
  The Great John L.

  Fighter
• 
  Don Haggerty

  Ape

• 
  John Daheim
• 
  Gene LeBell
• 
  Bert Freed

  Police Lieutenant
• 
  Barbara Dana
• 
  John Qualen
• 
  Herb Edelman

  Charlie

• 
  Edward Montagne

  după un volum de
• 
  Loyal Griggs

  imagine
• 
  Sam E. Waxman

  montaj
• 
  Neal Hefti

  coloană sonoră