Marcia Muller (born September 28, 1944) is an American author of fictional mystery and thriller novels.Muller has written many novels featuring her Sharon McCone female private detective character. Vanishing Point won the Shamus Award for Best P.I. Novel. Muller had been nominated for the Shamus Award four times previously.In 2005, Muller was awarded the Mystery Writers of America's Grand Master award. She was born in Detroit, Michigan, and grew up in Birmingham, Michigan, and graduated in English from the University of Michigan and worked as a journalist at Sunset magazine. She is married to detective fiction author Bill Pronzini with whom she has collaborated on several novels.