Biography

Eileen Dietz was born in New York City along with a twin sister, named Marianne. While Eileen went on to be an actress Marianne lives in Florida and has 3 terrific children. Eileen has been lucky to be involved with many award-winning projects. She was in the original Tony winning Steambath with Tony Perkins and went on to portray the Demon who possesses Regan in The Exorcist, following that was the Emmy-winning General Hospital where she portrayed Sarah a patient in a mental hospital in Port Charles and also the Emmy-winning Helter-Skelter where she was one of the Manson Gang. While these are the award-winning projects, Eileen has been blessed to continue working on many other projects. her latest favorites being Todd Sheets. Clownado, Thomas Churchill's - Amityville Harvest, Gino Alfonso - Joseph Kelly - Angela Joseph - Compatible Pearry Teo - The Assent, Michael Leavy & Fuzz On The Lens - Abnormal Attraction David DeCoteau - The Wrong Wedding Planner, Micah Gallo and starring the lovely 9 year old Chloe Perrin - Itsy Bitsy
- IMDb mini biography by: Eileen Dietz

Born in New York City and left New York City to come to Los Angeles after The Exorcist was shot. She shot The Exorcist with a SAG principal contract and was contracted to play the part of the demon.

She has an identical twin sister, Marianne Dietz.

At the age of just 6 weeks old she and her identical twin sister Marianne appeared in a TV commercial for a soap detergent.

Has a sister, Denise, who is a writer.