Horrors of the Black Museum
Bancroft (Michael Gough) has been forcing Rick (Graham Curnow) to obey with a "Jekyll & Hyde" type serum. When Rick brings his sweetheart Angela (Shirley Ann Field) to the Black Museum, Bancroft injects Rick and instructs him to kill her at the fun fair (carnival). Rick stabs Angela in the Tunnel of Love, and flees to the supports of the Ferris wheel, where the police hold him at bay. Bancroft arrives to observe his triumph, but Rick recognizes Bancroft and throws himself from the Ferris wheel with knife extended. Both men are killed, closing the case.
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