Dr. Giggles

When the psychopathic son of a mass-murdering doctor escapes from a mental institution, he seeks revenge on the citizens of the town where his father was finally captured. The giggling new "doctor" uses the surgical skills he picked up from his father and a near-lifetime spent in and around medical facilities to gruesomely do away with his victims while he awaits the chance to perform his ultimate revenge -- giving one of the townsfolk a heart transplant, without anesthesia! (official distributor synopsis)