Plot: In an abandoned railway station, parapsychologist George Tully conducts an investigation, as two operators, Sapphire and Steel arrive for an investigation of their own. A malevolent, growing force identifying itself as the Darkness is feeding on the resentment of the dead, using as a focus Private Sam Pearce, the apparition of a World War I soldier shot and killed eleven minutes after the armistice had been signed at the eleventh hour of the eleventh day of the eleventh month in 1918