On 14 December 1976, the 25-year-old student was kidnapped by 34-year-old Dieter Zlof, a Slovene-born mechanic who locked him into a crate and linked his feet and wrists to manacles that would give him electric shocks if he screamed or tried to break out. While Oetker was 1.94 m tall, the crate was 1.45 m long and 70 cm wide. In the early hours of 15 December, a noise sparked off a near fatal shock that broke Oetker’s thighs and two of his ribs as he thumped against the crate. His screams prolonged the shocks by ten seconds, and the pain was such that he briefly longed for death.