The Stranger Left No Card
A strangely-garbed and eccentric-acting stranger arrives in a small English town. But, after several days on being in the town, the citizens accept him as a harmless, though a bit daft, member of the community. He then pays a visit to the town's leading citizen and reveals himself as a man with the perfect plan for murder.
Directors: Wendy Toye
Writers: Sidney Carroll
IMDB: tt0045200