Cat Girl is a 1957 British horror film directed by Alfred Shaughnessy and starring Barbara Shelley, Robert Ayres, and Kay Callard.

[2] In the United States American International Pictures released Cat Girl on a double bill with The Amazing Colossal Man (1957).

[4] AIP put up $25,000 of the budget and a script by their regular writer Lou Rusoff in exchange for Western Hemisphere rights.

He had been paid for it, and was mainly interested in getting his ‘first day of principal photography’ money and enjoying his trip to London, away from Mrs Rusoff.

", so they hired special effects artist Paul Blaisdell to create a furry cat mask and claws (in less than 3 days) to splice into the film's finale for its U.S.

[citation needed] The cameraman shot most of this extra footage slightly out of focus, making it look really shoddy in Blaisdell's opinion.

Blaisdell also was disappointed at how little footage of his cat mask actually wound up in the finished film (the shots comprised only a matter of seconds).

The cat mask wound up being one of the "props" that got destroyed in the fiery climax of AIP's 1958 film How to Make a Monster.