Mark Tandy is an actor who appeared in "Goodbye Christopher Robin," "Howards End," and "Maurice."
Two sisters and their families decide to spend the Christmas holiday at their late parents' dilapidated country house.
Victorian London is gripped with fear as a serial killer leaves cryptic messages written in the blood of his victims. Scotland Yard's Inspector Kildare must rely on help from a witness to stop the murders and bring the maniac to justice.