She was best-known for 14 crime novels featuring the highly popular Detective-Inspector Carol Ashton and six featuring undercover agent Denise Cleever.
Her latest series features Kylie Kendall, an Australian transplanted to Los Angeles, who determines to become a private investigator in order to pursue her father's business and his business partner.
McNab served as the president of Sisters in Crime and was a member of both the Mystery Writers of America and the Science Fiction Writers of America.
[2] She moved to Los Angeles in 1994 after falling in love with an American woman, and taught not-yet-published writers through the UCLA Writers' Extension Program.
[3] In addition to crime fiction, McNab has published children's novels, picture books, self-help, and English textbooks.