À Caça do Monstro

Elenco

• 
  Rex ReasonDr. Thomas Morgan
• 
  Jeff MorrowDr. William Barton
• 
  Leigh SnowdenMarcia Barton
• 
  Gregg PalmerJed Grant
• 
  Maurice MansonDr. Borg
• 
  James RawleyDr. Johnson
• 
  David McMahonCapt. Stanley
• 
  Paul FierroMorteno
• 
  Lillian MolieriMrs. Morteno
• 
  Frank ChaseSteward
• Larry HudsonState Trooper
• Ricou BrowningThe Gill Man (in water)(sem créditos)
• 
  Don MegowanThe Gill Man (on land)(sem créditos)
• 
  George SowardsRanch Hand (sem créditos)

Equipe Técnica