Drama based on a real-life story of a love affair between a married army captain and a young female soldier. Susan Christie and Duncan McAllister have an affair, but Duncan ends the relationship when he's posted to Germany. Three days later, Susan and Duncan's wife, Penny, go for a walk in the woods in Northern Ireland. Fifteen minutes later, Penny is dead and Susan claims they were attacked by an unknown man.

At the Tranquil Repose mortuary, the Doctor and Peri uncover a sinister plot to create a new breed of Daleks under the supervision of the mysterious Great Healer.

Captured in a time corridor, the Doctor and his companions are forced to land on 20th century Earth, diverted by the Doctor's oldest enemy - the Daleks. It is here the true purpose of the time corridor becomes apparent: after ninety years of imprisonment, Davros, the ruthless creator of the Daleks, is to be liberated to assist in the resurrection of his army. Not even the Daleks foresee the poisonous threat of their creator. Indeed, who would suspect Davros of wanting to destroy his own Daleks - and why? Only the Doctor knows the truth. Will he descend to Davros' level of evil to stop him?

When DC Denis Deacey finds himself surprisingly transferred to Belfast he gets digs in a most unusual boarding house called The Crumlin View where no one is what they seem and everyone has been living with 'the troubles' for far too long...