The last ride

On the way to the airport, Jerry and Johanna witness how the successful equestrian Sarah Gantinger falls from her horse. It quickly turns out that the horse was blinded with a laser pointer. Jerry suspects a stupid prank, but in the course of the commissioners' investigations at the stud farm, the clues to an attack become stronger. Both the victim's sister Tanja Gantinger and her fiercest competitor, Valerie Flaucher, would have a motive.  A race against the clock begins, because the big question is: will the perpetrator attempt another murder on the young woman, who is in a coma?