Gardner

11 clues
Actress Ava
Mason's creator
Ava of the movies
Mystery writer Erle
Detective novelist Erle
Mathematics writer Martin
''The Barefoot Contessa'' star
Detective novelist Erle Stanley
The Case of the Musical Cow" writer
He wrote "The Case of the Lucky Legs
US actress. wife of Mickey Rooney, Artie Shaw and Frank Sinatra, d. London, 1990