American International Pictures released this in a double feature with The Amazing Colossal Man (1957).
An unofficial remake of Val Lewton's Cat People (1942).
The film was the first Anglo-U.S. co-production from American International Pictures. They put up $25,000 of the budget and a script by their regular writer Lou Rusoff in exchange for Western Hemisphere rights. The script was originally entitled Wolf Girl.
Original running time listed as 76 minutes. The U.S. release has a running time of 69 minutes, 33 seconds. Existing copies of the British print run 72 minutes 17 seconds.