Knife for the ladies, an interesting 1974 horror/western directed by Larry G. Spangler.
Also released in the UK under the title Jack the Ripper goes west.
A private detective arrives in Mescal, a town in the southwestern United States, to investigate the murders of several Jack the Ripper-style mutilated prostitutes.
He'll have to face the reluctance of the town sheriff and several suspicious characters, each with something to hide.