Bloodrage

Bloodrage also known as Never Pick up a Stranger is a 1979 horror film directed by Joseph Zito under the pseudonym Joseph Bigwood and written by Robert Jahn.

Richard acquires a room in a dingy motel, gets a job at a bottling company, befriends a neighboring drug dealer named Candice, and spies on Nancy, a prostitute who lives across from Candice. Intoxicated by what he felt during Beverlys death, Richard murders a woman named Lucy, torturing and humiliating her beforehand. Ryan, suspicious of Beverlys disappearance, heads to New York in search of her, enlisting the aid of the local police, and passing photographs of her around at clubs and bars. During the course of his investigation, Ryan spots Richard in a restaurant, and hears a broadcast announcing that Beverlys remains were uncovered. Concluding that Richard probably killed Beverly, Ryan finds out where he is staying, and heads there.At the motel, Richard gets into a fight with Candice, and kills her, and her dog. Ryan finds Candices corpse, and sees Richard at Nancys through the window Richard broke when he threw the body of Candices dog out it. Richard attacks Nancy, but she fights him off with the help of a straight razor, and a pair of pimps. Ryan happens upon the scene, grabs Richard, and throws him out a window to his death. ........

Source: Wikipedia