Writing
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A coroner finds a capsule in the head of a heavily mutilated corpse, containing a phone number and single word: the name of his daughter.
A murderer always kills across Europe according to the same pattern: he kills single women and provides the victims with his personal signature. A friend of Abel's is suspected. Abel wants to help him and investigates himself.
A woman dies in a Berlin nightclub after being overdosed with a drug. Abel's children, who have fun in Berlin's nightlife, are also caught by the murderer.