The Case of the Smiling Stiffs (1973) is a Comedy, Horror film that follows is Emma a voyeur vampire who can turn into a bat? Apparently, and she leaves many smiling faces on her victims after going down on them during a full moon. When they're not having sex with their suspects, two cops investigate the murders. The Case of the Smiling Stiffs is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.1 out of 10 from 7 votes. Fans of comedy movies may also want to explore similar titles below.