A drug deal gone bad. A daughter gone missing. A hit man on the loose. And five days to find the answers.

As journalist Siobhan Fallon embarks on a hunt for a missing girl, DI Mike Mulcahy uncovers a link between Ireland's largest-ever drugs haul and the murder of an Dublin gangster in Spain.

With the body count mounting, Mulcahy and Fallon plunge into a world of lies, betrayal and unexpected allegiances - where a powerful enemy will stop at nothing to silence the one person still alive who knows the truth...