DI Tom Thorne and DI Nicola Tanner investigate a series of brutal killings in London in the year's most shocking crime novel - and the most daring work yet from number one bestseller Mark Billingham

From number one bestseller Mark Billingham comes a masterful, intense crime novel that pits DI Tom Thorne against an evil beyond comprehension, yet shockingly real.

'Groundbreaking and gripping' Sunday Times

A BLOODY MESSAGE
As DI Nicola Tanner investigates what appears to be a series of organised killings, her partner Susan is brutally murdered, leaving the detective bereft, and vengeful.

A POWERFUL ALLY
Taken off the case, Tanner enlists the help of DI Tom Thorne to pursue a pair of ruthless killers and the broker handing out the deadly contracts.

A CONSPIRACY OF SILENCE
As the killers target their latest victim, Thorne takes the biggest risk of his career and is drawn into a horrifying and disturbing world in which families will do anything to protect their honour.