After 9 years apart, John Reginald Christie and his estranged wife Ethel reunite and move into 10 Rillington Place. As war breaks out, the fractures in their relationship reappear beneath the thin veneer of married respectability.
Newlyweds Tim and Beryl Evans arrive at 10 Rillington Place. As time passes and the young couple's relationship hits difficulties, Christie's interest and influence over them takes a much more sinister turn.