David Murdoch is a middle-aged prison officer; widowed, living alone, he has one grownup daughter, Lucy, who is pregnant. She is his world. When Jules Hope, an inmate at Ravenhill Prison, is taken ill, it’s Murdoch who escorts her to hospital. But while Jules is waiting for treatment, Murdoch gets a phone call with an ultimatum that turns his life upside down. If Murdoch wants to see his daughter again, he must break Jules out of hospital and deliver her to the man holding Lucy captive. If he talks to the police, Lucy will die. Murdoch knows he has no choice but to comply. But when the plan goes awry he is forced to take matters into his own hands. Pursued by DS Susan Reinhardt, Murdoch finds himself in a race against time to evade the law and save his daughter’s life.
Things seem bleak for Murdoch when he learns from Reinhardt that Eddie is in fact dead, and Jules has been spotted escaping with brother Daniel. Reinhardt is determined to find out the truth about who is behind Lucy’s abduction, but Murdoch fears he’ll never see her again. However Jules and Daniel have a bigger plan - they need Murdoch’s help to retrieve money they stole from Eddie years before. Will Murdoch get Lucy to safety before Reinhardt catches her prey?