Scared Stiff (1987)

Alan and Halley are partners in a pest control company. Handsome Alan gets the girls and puffy Halley gets nothing. One night the two are injured in a car crash. Halley suffers slight injuries but Alan is dead for all purposes except his brain wave which still works actively. But when Halley cries over his "corpse", Alan bursts into ecplosive life. So the doctor decide to study this phenomenon and Alan agrees to be the guinea pig as he fancies the beautiful Dr. Emily. Halley discovers by accident a murder and is chased by the murderer who happens to be a police inspector...