A young woman has been gruesomely killed, her body abandoned in a car boot in the middle of London as a warning to others. The police have no leads and no clues as to the identity of the victim. It seems that Lia is the only one who refuses to let the murderer go unpunished. A chance encounter with the mysterious Mari gives Lia fresh hope. But just who is she? Can Lia trust her? Can Lia afford not to trust her?