Mariclare Costello, Actress in ‘The Waltons’ and ‘Let’s Scare Jessica to Death,’ Dies at 90
Mariclare Costello, a lifetime member of The Actors Studio who recurred as the schoolteacher Rosemary Hunter on The Waltons and played a hippie vampire in the cult horror film Let’s Scare Jessica to Death, died April 17 in Brooklyn, her family announced. She was 90. A native of Illinois, Costello was an original member of…