An unknown person is breaking into apartments and houses randomly, attacking the residents. When he disappears, he leaves behind a dead body. No one sees him arrive or leave. Above all, nobody knows whether he choses his victims according to a pattern or by chance. Max Bischoff, the youngest detective of the homicide division in Düsseldorf, profiling expert and passionate runner, starts to investigate and comes across a highly intelligent and particularly dangerous opponent, who appears to be following a set target. And if he wants to prevent further murders, Max Bischoff has no choice but to play the game – even if he is pushed to the limit of his own mental health.
