Tales of the Unexpected - Season 5 Episode 14 -

The rich, bossy Norma owns a big house and allows her sister Emily and lazy brother-in-law Bob to live at the lodge. One day, Emily vanishes without explanation, and Norma suspects Bob of killing her for a life insurance pay-out. Norma unwisely makes a noise about her suspicions - but while Bob has a sinister side to him, he is rather more subtle than that...