Heiko Beer, a young musician, was stabbed in his own apartment. This is what his landlord Ms. Jobst excitedly reports to the team of investigators and can even describe Hui Ko to the suspicious perpetrator. But he seems strangely familiar to them, because he looks like Klaus' son-in-law Jens! And in fact it was there, but as a private detective. Klaus is not amused, but Jens has important information. He was hired by Ilona Schubert, who wanted to find out whether her fiance Tobias Kracht had an affair with the musician. Hit the bull's eye. But when interrogated by the „ Rentnercops ", that seems to be completely ok for Ilona. Does she excrete as a perpetrator? Hui Ko researches that the murdered person was active in online dating and is simply pretending to be a homosexual single.
Will Heiko's last contact bite? Indeed: Roland Müller is the object of desire and admits that he met the dead shortly before the murder. There are also new entanglements at Jobst. A break-in in Heiko's apartment! Tatjana Weber, a friend of mine, is behind it, but what did she want there? Meanwhile, Bielefelder discovers a new hobby. He tries, much to the dismay of dog Yoda, on the bagpipes. But which suspect will the „ Rentnercops " ultimately blow the march?