Evidence never lies... But people do.

CSI Ally Dymond's commitment to justice has cost her a place on the major investigations team. After exposing corruption in the ranks, she's stuck working petty crimes on the sleepy North Devon coast.

Then the body of nineteen-year-old Janie Warren turns up in the seaside town of Bidecombe, and Ally's expert skills are suddenly back in demand.

But when the evidence she discovers contradicts the lead detective's theory, nobody wants to listen to the CSI who landed their colleagues in prison.

Time is running out to catch a killer no one is looking for - no one except Ally. What she doesn't know is that he's watching, from her side of the crime scene tape, waiting for the moment to strike.