The Crossword Mystery series is a collaboration created by the husband and wife writing team of Steve Zettler and Cordelia Frances Biddle. Cordelia's previous work has been primarily historical fiction (Beneath the Wind and Murder at San Simeon), while Steve's has been more international thrillers (The Second Man, Double Identity and Ronin). However, the concept of writing in partnership has always fascinated them. Books to date include The Crossword Murder, Crossword Connection, Two Down and A Crossword to Die For. Crossword Mysteries.