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From cult filmmaker/producer William Castle, the director of House of Haunted Hill, The Tingler, 13 Ghosts, Homicidal, Strait-Jacket and The Night Walker comes this wonderful horror comedy starring Nigel Green (The Ipcress File). A 12-year-old orphan (Pat Cardi, Horror High) 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 (Mary Badham, Scout Finch of To Kill a Mockingbird) is the boy's only ally against his sarcastic and sadistic uncle, who uses hypnotism, a pool of sharks, fire, and poisonous mushrooms as weapons. Beautifully shot by Harold Lipstein (Never Steal Anything Small).