A barrel is discovered at the bottom of Lake Constance, containing the body of Charly Lobinger. He vanished without a trace years ago after winning the lottery. Doro Beitinger and Chiara Locatelli investigate. Charly Lobinger's girlfriend, Mona Reichel, had reported him missing at the time. She runs a distillery with her sister, Linda, and lives with her in Charly's villa. The detectives learn that Charly left Mona more than just his villa. At the time of his disappearance, Mona was pregnant; her son, Leo, is now a year and a half old.
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