THE ROCKET-PACED SERIAL-KILLER THRILLER AND RICHARD & JUDY BOOK CLUB PICK FROM M. J. ARLIDGE

'What a great premise! Detective Inspector Helen Grace is one of the greatest heroes to come along in years' JEFFERY DEAVER
'Wow! A gripping read from the very beginning' 5***** Reader Review

The girl emerged from the woods, barely alive. Her story was beyond belief. But it was true. Every dreadful word of it.

Days later, another desperate escapee is found - and a pattern is emerging.

Pairs of victims are being abducted, imprisoned then faced with a terrible choice:

Kill or be killed.

As Detective Inspector Helen Grace leads the investigation to hunt down this unseen monster, she learns that it may be the survivors - living calling cards - who hold the key to the case.

And unless she succeeds, more innocents will die . . .