In the chilly half-light of dawn a bizarre pierrot figure waits in the shadows of a deserted stretch of motorway. The costumed hitchhiker's victim is a passing motorist. The murder, cold-blooded, brutal. Without motive.

Doctors at the local hospital Tim and Daisy Sherringham are blissfully happy. The perfect couple.
When an emergency call rouses Tim early one morning, he vanishes on the way from their flat to the hospital and Daisy is plunged into a nightmare of terror and doubt . . .