After a seance to contact his dead child goes horribly wrong, Angus Jenson fears he may be possessed by an evil spirit. The team soon find themselves in a race against time to unravel the mystery behind the spiritual session, but are unprepared for the chilling truth that emerges.
Craig becomes aware of Justine's paranormal abilities when she experiences vivid, sporadic visions pointing toward a violent death. After monitoring her brainwaves in a flotation tank, a number of shocking images come to light, and the terrifying events that unfold draw the pair, and those around them, into terrible danger.
A routine sleep experiment on a student takes a sinister turn when a dark force is unleashed in the university. Justine fears the subject's night terrors are becoming a reality and, unable to escape, she and Monaghan make a bid to unlock the secret of his unconscious memory before it's too late.
Justine and Craig are hired to expose a hoax haunting at a trendy Glasgow hotel - but quickly discover the sinister events in question are all too real. They seek Monaghan's advice after the manager and her family grow impatient with their investigations, and find the origins of the macabre goings-on are more unexpected and devastating than they imagined.
A man is found dead after being warned that his fiancee will kill him, and Craig falls ill when the spell of a beautiful stranger overpowers him. Justine is prompted to delve into ancient Hebrew mythology in a bid to uncover the true and terrifying nature of what has taken hold of him and how the man met his death.
A woman displays signs of extraordinary electrical powers after dabbling in black magic to win back the affections of her former lover. Monaghan faces a new and terrifying reality as the team try to unravel and subdue the dark, mysterious forces attacking her.
Ian and Karen find a weird diagram on the wall of their house whilst redecorating. They ask Douglas Managhan for his help in solving what it means.
The professor learns about the visions that Karen has been having. When he discovers some evidence putting everyone in danger, Karen's worst fears are realised.