DS Stanton, DC Lennox and DC Proctor are on an obbo at a spooky old building called the Old Pumping Station, which is supposed to be haunted. The trio tell each other ghost stories: back in his uniform days, Proctor was assigned to watch the house of a serial murderer. Investigating a noise, he meets a young woman called Cathy, who turns out to have been one of the killer's victims. A sceptical Stanton reveals how a psychic's assistance with a case she worked on turned out to be a hoax. Lennox, when he was in the Glasgow police, meets a dying crime boss who promises revenge from beyond the grave.
- George Rossi as D.C. Lennox
- Clara Salaman as D.S. Stanton
- Gregory Donaldson as D.C. Proctor
- Shaun Scott as D.I. Deakin
The cast details in the closing credits are subdivided: after the four regulars and the dying man, there are separate credits for "Proctor's Story", "Stanton's Story" and "Lennox's Story".
The opening credits are written in script, with the title and names in 'Halloween' font.