Midnight Party (1976)

Strange tale of a dancer (Lina Romay) who leaves her husband and rock star boyfriend at home when two playboys invite her to a midnight party. Once at the party she has a threesome with a couple and then wakes up the next morning to find both of them dead in bed with a knife in their back. Soon Romay finds herself kidnapped and on a strange voyage where she keeps showing up at various locations. This is a rather strange film because a lot of the time it has Romay looking at the camera and talking to the viewer as well as telling them jokes. imdb