When John Landis finally secured financing for An American Werewolf in London, the project arrived at the studio with an unusual commercial problem: the screenplay was considered too frightening to function as a comedy and too funny to be sold as a conventional horror film. Landis had written the first draft in 1969 and had spent more than a decade watching financiers reject it. Only after the success of The Kentucky Fried Movie, National Lampoon's Animal House, and The Blues Brothers did PolyGram Pictures agree to finance the production. Even then, Universal executives tried to reshape the film around the comedy stars who had made Landis a bankable director. They pushed for Dan Aykroyd and John Belushi to play the American students David Kessler and Jack Goodman, effectively suggesting that the picture be marketed as another high-profile Landis comedy rather than as a strange hybrid of romantic drama, grotesque horror, and deadpan British humor.
Landis resisted the pressure and cast comparatively unknown actors David Naughton and Griffin Dunne instead. That decision preserved the film's vulnerability: audiences encountered David and Jack as ordinary young travelers rather than as recognizable comic personalities whose screen personas might soften the horror. The gamble paid off. Naughton's agonizing transformation and Dunne's progressively decomposing appearances became central to the film's identity, while the picture grossed approximately $62 million worldwide on a budget of under $6 million and helped establish Rick Baker's groundbreaking effects work. The episode is a revealing example of the studio system's instinct to package an unconventional project around proven stars—and of a director using recent box-office leverage to reject that formula.
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