Revenge waits patiently for the wicked.

In Cork, the young female employees of the glamorous cosmetics counter at Green Matthews are too scared to report what happens during their 'training sessions' with the wealthy owner. But when two of them vanish and are later found dead, their bodies marked with strange burns, DS Katie Maguire discovers a secret room and an unseen occupant with disturbing appetites.

Meanwhile, a faceless predator is making money on the dark web by filming acts so depraved they shake Katie's entire team.

When an abduction makes this case personal, the countdown to find answers begins. But vengeance doesn't always strike where you expect – and a devastating reckoning is waiting for Katie too…

The 13th darkly gripping instalment in Graham Masterton's million-copy-bestselling Katie Maguire police procedural series, perfect for fans of Peter James, CJ Tudor and Chris Carter.