When newly-weds Tim and Beryl move into 10 Rillington Place they are befriended by their older neighbours, the Christies.As time passes and the young couple's relationship hits a rough patch, Christie's interest and influence over the couple takes a much more sinister turn.

After the strain of Timothy Evans' trial, Christie finds it increasingly difficult to maintain the charade.As his marriage breaks down he embarks upon a course of action which finally reveals his true nature to the world.