A uranium prospector is eating a peanut butter sandwich in the desert where atom bomb tests are being done. He becomes radioactive, and helps the FBI break up an enemy spy ring.
| Actor | Role |
|---|---|
 Mickey RooneyBarnaby 'Blix' Waterberry | Barnaby 'Blix' Waterberry |
 Robert StraussStan Cooper | Stan Cooper |
 Elaine DevryAudrey Nelson | Audrey Nelson |
 Bill GoodwinDr. Rodell | Dr. Rodell |
 Whit BissellDr. Edgar Pangborn | Dr. Edgar Pangborn |
 Joey FormanMP in Hospital | MP in Hospital |
 Peter LeedsAgent Bill | Agent Bill |
 Hal MarchAgent Ray | Agent Ray |
 Fay RoopeGen. Lawlor | Gen. Lawlor |
 Stanley AdamsWildcat Hooper | Wildcat Hooper |
 Robert Emmett KeaneMr. Reynolds | Mr. Reynolds |
 Paul DubovAnderson | Anderson |
| BBill WelshCommentator | Commentator |