Exorcist pea soup

The radiological technician in ‘The Exorcist” who gives Regan a medical examination to find out what is wrong with her was played by Paul Bateson, who would later be convicted of murder and is a suspected serial killer. In fact that whole scene existed because William Friedkin saw him assist in a real life procedure and wanted it in the movie, and Bateson was cast because his boss Dr Lane- also in the scene- asked that he and the nurse be in it. The whole thing was shot on-location in his place of work and Bateson is the one with the most dialogue in the scene, calmly talking Regan through things in the exact same manner he did real life child patients.

Har!