Let's Kill Uncle (1966)

A 12-year-old orphan who has just inherited a fortune is trapped on an island with his uncle, a former British intelligence commander who intends to kill him. A young girl is the boy's only ally against the sarcastic uncle, who uses hypnotism, a pool of sharks, fire, and poisonous mushrooms as weapons.

Let's Kill Uncle is a 1966 movie. Genres: Thriller, Horror. Directed by William Castle. Main cast: Nigel Green, Mary Badham, Pat Cardi, Robert Pickering, Linda Lawson. Runtime: 92 minutes. Its average rating is 5.5 out of 10, from 17 votes.