Strip Nude for Your Killer (1975)

A fashion model has died while receiving an illegal abortion, and after the abortionist is slain, a leather-clad killer, who hides his identity under a motorcycle helmet, begins targeting the deceased model's former co-workers. One by bloody one the models begin to fall prey to the mysterious killer, and all of the crimes have one thing in common - the victims were all forced to strip nude before meeting their grim fate.