A circus barker stages a sensational new act, the world's longest fast undertaken by “Sapolio”, on view in a glass cage. But this act also results in several murders, a kidnapping, and a poisoning!

Cast:John Ireland, Honor Blackman, Geoffrey Keen, Eric Pohlmann, Sidney James, Liam Redmond,

Genre:Crime,

country:United Kingdom,

Production:Hammer Film Productions, Lippert Films,