Cardiff. Late January.

Detective Sergeant Tom Shaw is called to investigate the brutal and seemingly-motiveless murder of a young woman.

A man haunted by grief, Shaw sifts through the remains of the victim's perfect existence, uncovering layered deceit and hidden truths.

When echoes of the crime start to invade the shattered life Shaw is trying to rebuild, he steps up the hunt for the murderer, driven by the chilling certainty this sadistic killer is poised to strike again...