A young woman is saved from an attacker by a little old lady. The next morning DI Chandler and his team discover the skin of a man's face in Whitechapel Art Gallery. The victim has distinct Russian prison tattoos so a link with the Russian mafia is likely. But is there more to the murder and who is the mysterious artist Sebastian Marlowe? Meanwhile the eeriness in the station continues as Buchan's struggles to save his archive from the encroaching mould.