In Rosenheim's Kurpark a jogger finds contractor Jochen Brandt's corpse, the evening before his “Tango am See“ participation at the dance school run by the couple André and Laura Freund. They point the cops to his tango partner, ex wife psychiatrist Melanie Vogt who rejoined the firm and took him into her villa's guesthouse, believing he was finally getting out of financial trouble due to a major contract. André Freund may have killed out of jealousy over Brandt's affair with adulteress Laura Freund.