Deborah is a history postgraduate student, living with three flatmates, one of whom is her long-term boyfriend James. The relationship becomes increasingly fractious as Deborah's finals draw near. Her fitful sleep is punctuated by inexplicable bouts of sleepwalking; James seems less than sympathetic. After seeing a psychologist, Deborah realises that the cause of her unease is the fact that James is having an affair. After a blazing row, he storms out and, the following morning, Deborah wakes up next to a blood-spattered claw hammer. What has she done? Could she have attacked someone in her sleep? Is she really going insane? Or has someone taken advantage of her affliction?

Emily Stapleford and Lucy Slater, a longtime friends, move in as lodgers with reclusive writer Colin Edwards in his house. Recently, there's been several highly-publicised murders of young women in the area. When a sixth victime of the murderer has been discovered, Emily and Lucy's suspicions have been aroused. So, now they must find out could their landlord, Colin Edwards be a killer. Lucy becomes obsessed with the whole story so she keeps a scrapbook on the murders…

Three city dealers' scheme to siphon off money from their company's accounts is suspected by Simon's boss so he and his friends hire ageing hitman Terry Cameron to do away with him. Cameron requires payment only on completion of the job, but when the boss publicly dies of a heart attack the dealers decide there is no need to pay the hitman. Cameron then starts killing the dealers one-by-one as a penalty for non-payment.