Also Known As:
- Lei, il mostro
- Mysterious Invader
- The Astounding She Monster
- The Naked Invader
- Ronald V. Ashcroft (as Ronnie Ashcroft)
- Frank Hall
- Ronald V. Ashcroft
- Robert Clarke ... Dick Cutler
- Kenne Duncan ... Nat Burdell
- Marilyn Harvey ... Margaret Chaffee
- Jeanne Tatum ... Esther Malone
- Shirley Kilpatrick ... The She-Monster
- Ewing Miles Brown ... Brad Conley (as Ewing Brown)
- Al Avalon ... Radio Newscaster (voice)
- Scott Douglas ... Narrator (voice)
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