Cruising is a 1980 psychological thriller film directed by William Friedkin and starring Al Pacino. The film is loosely based on the novel of the same name, by New York Times reporter Gerald Walker, about a serial killer targeting gay men, in particular those associated with the S&M scene. Poorly reviewed by critics, Cruising was a modest financial success, though the filming and promotion were dogged by gay rights protesters. The title is a play on words with a dual meaning, as "cruising" can describe police officers on patrol and also cruising for sex.