DI Ray Lennox and his partner are investigating the disappearance of schoolgirl.

As Lennox wrestles with his sobriety, the investigation continues.

Lennox must use all his guile and cunning to expose those with something to hide.

Another young girl has gone missing, but Lennox thinks he can lure the perpetrator in.

Lennox interrogates the suspect about the girl. Will he be able to save her in time?

Lennox must face his demons to help him uncover the truth about the case.

As the series hurtles to a climax, Lennox makes a shocking discovery that turns the case on its head; all is not as it seems and the truth behind these murders lies closer to home.