The carefully draped corpse of 16-year-old student and gifted pianist Rita Koehler is found on a grand piano in a concert hall. Her body was apparently embalmed. Could it have been suicide and aiding and abetting? Then the also prepared corpse of an old man is found – Karl Hahnemann, born in 1923. What did Rita and Hahnemann have in common? Both had a talent: Rita in music, Hahnemann was a gifted chess player. A third victim inevitably makes it clear to the investigators that they are dealing with a serial offender: when the seven-year-old, highly talented Björn disappears, Borowski, his colleague Alim Zainalow and police psychologist Frieda Jung urgently need to decode a pattern in order to track down the perpetrator come.