Scalpel (1977)

Dr. Phillip, a deranged plastic surgeon, who has probably murdered his wife and who definitely has murdered his daughter's boyfriend, is distressed when he learns Phillip's, his father-in-law will. Rather than leave any money to the transparently awful son-in-law, he leaves his entire (very large) estate to the surgeon's daughter, Heather. The only problem is, the girl has run away. He hits on the scheme of re-creating his daughter's face from the ruined features of a go-go dancer, and with her cooperation bilks the estate of several disbursements, growing increasingly deranged as time goes on.