The Sherlock season four finale contained a moving and unbearably tense scene set in Molly Hooper’s kitchen, in which Sherlock saves the pathologist’s life at the last moment. Sherlock’s psychotic sister Eurus has constructed a scenario in which Benedict Cumberbatch’s character held captive on the island prison of Sherrinford is involved in a phone call with Molly during which he must get her to say the words “I love you” to him.