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A serial killer dispassionately discusses the nuts and bolts of his grisly avocation, as well as the youthful traumas which helped to mold him into a psychopath, in this disturbing independent drama from Germany, based on a true story. Young Jurgen Bartsch (Sebastian Urzendowsky) was raised in a family where his father (Walter Gontermann) barely acknowledged his existence and his mother (Ulrike Bliefert) displayed an inappropriate degree of affection toward him. When he reached puberty, Bartsch (played as a teenager by Tobias Schenke) was a young man confused and bitter about his growing sexual maturity, and possessing a deep hatred of those around him. Bartsch was a 15-year-old apprentice butcher when he kidnapped and murdered a young boy; he would kill three more boys in a similar fashion before he was captured by police in 1966. After he was found guilty, Bartsch carefully documented his childhood and his crimes in a series of letters and essays, and Ein Leben lang kurze Hosen tragen is drawn from his own words as it dramatizes his life and his crimes.