The Mysterious Monsters
VoltarElenco
Peter GravesHimself - Narrator- Peter HurkosHimself
- William StenbergHimself
- Sidney WalterHimself (as Dr. Sidney Walter)
- Jerilou WhelchelHerself
- Roger PattersonArchive Footage
- Peter C. ByrneEle próprio
- Grover KrantzEle próprio
- Adrian ShineLoch Ness Investigator
- Robert W. MorganEle próprio
- John GreenEle próprio
