There have been three prints of this film:
- The original negative print by Miller Consolidated Pictures (MCP). The film opens with the MCP company logo, and retains the pre-credits prologue. The film does not have any end titles; it ends with Dr. Peter Ulof (Ivan Triesault) facing the camera, asking "What would you do?" And the film simply fades to black. This version is available on DVD by MGM Home Entertainment (with the MGM "Lion" logo added at the beginning and after the end).
- The theatrical release print by American International Pictures (AIP). The AIP logo (with ominous fanfare) replaces the MCP logo at the beginning, and is also added at the end (right after Dr. Ulof's "What would you do?" speech after fadeout). This is the version used on the movie-mocking TV series, "Mystery Science Theater 3000."
- A public domain print, possibly used for syndicated/local TV. The MCP logo and the film's prologue are omitted, and begins at the film's title. A "The End" title card (plain font placed within a four-square gray/screentone background) was tacked on (complete with a relieved, low-tone piano cue), fading in after Dr. Ulof's "What would you do?" speech, and fading out.