Heike Makatsch and Sebastian Blomberg as persistent detectives from Mainz in a case involving two girlfriends and a young lover. Bibiana Dubinski, best ager, wealthy and determined to enjoy life for as long as possible, dies of insulin shock. Her close friend Charlotte Mühlen, less wealthy but recently happily in love with young Hannes Petzold, inherits the villa and fortune. Two friends in the so-called prime of life, one rich, the other heiress, plus a 30-year-old ex-con who is ensnaring the heiress – is it experience, instinct or a fallacy that all the alarm bells are ringing for Ellen Berlinger? She is convinced that a crime has happened and suspects Hannes Petzold. But the evidence is not very reliable and prosecutor Winterstein closes the case.
Martin Rascher persistently fought for a tight window of opportunity for further investigations. The detectives comb through the entire case again, putting pressure on Charlotte Mühlen with suspicions about her lover.