Shortly before the end of their time together in Rosenheim, inspectors Laura and Thomas Schmidt have to deal with a mysterious case: a dead man is found in front of their office door. Who is the man? His papers identify him as a Spanish citizen named José Barthol. But there are doubts as to whether this is his true identity. Mohr also has no further information about the victim this time and Stockl's research comes to nothing. What should she check if it is not clear who you are dealing with? Inspectors Laura and Thomas Schmidt follow the only lead they found on the dead man and come across an accident that happened decades ago. Is the solution to the case really in the past? While the inspectors are investigating, Stockl is supposed to book a room in a boarding house for Thomas Schmidt. He's on vacation soon and wants to go away for a few days. But why does the commissioner need a double room? And for whom is the second opera ticket that Mr. Eighty got him?