The Driller Killer

The Driller Killer is a 1979 American black comedy slasher film directed, edited by, and starring Abel Ferrara, from a screenplay by Nicholas St. John. It was Ferrara's first mainstream feature film, following his 1976 pornographic film 9 Lives of a Wet Pussy. The plot concerns Reno Miller, a struggling artist in New York City, turning insane from stress and killing derelicts with a power drill.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.