Twisted Nerve

Twisted Nerve is a 1968 British psychological thriller film directed by Roy Boulting and starring Hywel Bennett, Hayley Mills, Billie Whitelaw and Frank Finlay. The film follows a disturbed young man, Martin, who pretends, under the name of Georgie, to be mentally retarded in order to be near Susan - a girl with whom he has become infatuated - and who kills those who get in his way.