Onder andere met: John Agar (Dr. Matt Hastings), Mara Corday (Stephanie 'Steve' Clayton), Leo G. Carroll (Prof. Gerald Deemer), Nestor Paiva (Sheriff Jack Andrews), Ross Elliott (Joe Burch), Edwin Rand (Lt. John Nolan), Raymond Bailey (Townsend), Hank Patterson (Josh), Bert Holland (Barney Russell), Steve Darrell (Andy Andersen)