FILM 1794: THE KILLING OF A SACRED DEER
TRIVIA: Heart surgery scenes in the film are real. They were filmed during an operation on a real patient who was undergoing quadruple bypass surgery which Colin Farrell attended.
The film's title comes from the ending of the tragedy Iphigenia in Aulis by Euripides.
When Steven is at the school for the parent teacher conference, the principal tells him that Kim wrote a paper on Iphigenia for which she got an A, and that was read aloud to the class. Iphigenia, in Greek mythology, is the daughter of Agamemnon -- she who was to be sacrificed for the sins of her father.
Nicole Kidman and Colin Farrell began working together on The Beguiled (2017), only a few weeks later they wrapped filming on this film. Both films would go on to be in competition for the Palme d'Or at the 2017 Cannes Film Festival, and both would win awards in the official competition ("The Beguiled" won the Directing award for Sofia Coppola while "The Killing of a Sacred Deer" shared the Screenplay award with Lynne Ramsay's You Were Never Really Here (2017)).
Second collaboration between Yorgos Lanthimos and Colin Farrell, the first being The Lobster (2015).