A photo of a very young Tony Curtis appears on the wall at the production studio
The second of Universal Pictures' 3-D films directed by Jack Arnold (the first was It Came from Outer Space), this movie was tested in both 2-D and 3-D. Audiences did not prefer the 3-D version and (as a result of sub-standard projection of the stereoscopic 3-D process and the resulting prejudice against 3-D) many preferred the 2-D, flat version of the film. The 3-D version was rarely, if ever shown. There is no evidence that the 3-D version ever opened commercially in Los Angeles and may not even have been shown in New York or other major cities. A 3-D print does exist today, proving (in addition to the studio records) that the film was completed in that format.