The discovery of a dead body in an empty cottage sparks off a nightmarish case for Jim and his partner, an unorthodox London detective.

Jim enlists the aid of a lady psychologist in tracking down someone who has been anonymously calling Charlie and blaming him for a former business associates death.

A team of archaeology students are carrying out an excavation on a piece of land reputed to be cursed. Soon one student is attacked by an unseen force and one later turns up dead. Charlie owns the land and suddenly falls ill when the students start to excavate the land. Bergerac refuses to believe that a Viking's curse is at work and works with the expedition leader to find the truth. However in a rather confusing climax as she and Bergerac finally complete the excavation only to be attacked by the same unseen force. Bergerac later awakes where a rational explanation is given for what occurred by a recovered Charlie.

When a retired scientist gets a demand for a million pounds, Bergerac has a race against time to find the extortioner before his threat of destruction is carried out.