For „The Killing of a Sacred Deer“ to let the Greek director Yorgos Lanthimos (The Lobster) inspired by the mythology of his homeland, from the work Iphigenia in Aulis by the Greek playwright Euripides, of the 5. lived century BC. In the tragic history of the goddess Artemis demands from traveling to Troy commander Agamemnon, to sacrifice his daughter Iphigenia, only then would pick up the wind in the port city of Aulis, delayed the onward journey. In the psychological thriller Steven works Murphy (Colin Farrell) as a respected cardiac surgeon and, together with his wife Anna (Nicole Kidman), an ophthalmologist, a prosperous life. Together they have two children, the 14-year-old Kim (Raffey Cassidy) and the 12-year-old Bob (Sunny Suljic). with Martin (Barry Keoghan) However learns Steven in his capacity as a doctor 16-year-old youth from socially disadvantaged know, takes him under his wing and introduces him finally his family before. However, Martin exerts a negative influence on the life of the physician and the more he the boy and his single mother (Alicia Silverstone) zoom lets itself, more chaotic is his own life, until he has to make a serious decision finally, requires an unthinkable sacrifice from him, if he does not want to lose everything.