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In their first case together, Glaswegian police team DI Anderson and DS Costello chase the Crucifixion Killer

In their third mystifying case, Glaswegian police duo Anderson and Costello must solve the murder of a criminal with a mutilated face

Glaswegian police duo DI Anderson and DS Costello face their second disturbing case when two young boys are abducted

The fourth instalment in the Anderson and Costello series turns personal for Anderson as he fights to clear his name while investigating a series of brutal crimes targeting child victims