James Mallahan Cain (July 1, 1892–October 27, 1977) was an American journalist and novelist. Although Cain himself vehemently opposed labeling, he is usually associated with the hard-boiled school of American crime fiction and seen as one of the creators of the "roman noir." He was born into an Irish Catholic family in Annapolis, Maryland, the son of a prominent educator and an opera singer. He inherited his love for music from his mother, but his high hopes of starting a career as a singer himself were thwarted when she told him that his voice was not good enough. After graduating from Washington College where his father, James W. Cain served as president, in 1910, he began working as a journalist for The Baltimore Sun. He was drafted into the United States Army and spent the final year of World War I in France writing for an Army magazine. On his return to the United States he continued working as a journalist, writing editorials for the New York World and articles for American Mercury. He also served briefly as the managing editor of The New Yorker, but later turned to screenplays and finally to fiction. Although Cain spent many years in Hollywood working on screenplays, his name only appears on the credits of three films, Algiers, Stand Up and Fight, and Gypsy Wildcat. His first novel (he had already published Our Government in 1930), The Postman Always Rings Twice was published in 1934. Two years later the serialized, in Liberty Magazine, Double Indemnity was published. He made use of his love of music and of the opera in particular in at least three of his novels: Serenade (about an American opera singer who loses his voice and who, after spending part of his life south of the border, re-enters the States illegally with a Mexican prostitute in tow), Mildred Pierce (in which, as part of the subplot, the only daughter of a successful businesswoman trains as an opera singer) and Career in C Major (a short semi-comic novel about the unhappy husband of an aspiring opera singer who unexpectedly discovered that he has a better voice than she does). He continued writing up to his death at the age of 85. His last three published works, The Baby in the Icebox (1981), Cloud Nine (1984) and The Enchanted Isle (1985) being published posthumously. However, the many novels he published from the late 1940s onward never quite rivaled his earlier successes.

Margaret Ellis Millar (née Sturm) was an American-Canadian mystery and suspense writer. Born in Kitchener, Ontario, she was educated there and in Toronto. She moved to the United States after marrying Kenneth Millar (better known under the pen name Ross Macdonald). They resided for decades in the city of Santa Barbara, which was often utilized as a locale in her later novels under the pseudonyms of San Felice or Santa Felicia. Millar's books are distinguished by sophistication of characterization. Often we are shown the rather complex interior lives of the people in her books, with issues of class, insecurity, failed ambitions, loneliness or existential isolation or paranoia often being explored with an almost literary quality that transcends the mystery genre. Unusual people, mild societal misfits or people who don't quite fit into their surroundings are given much interior detail. In some of the books we are given chilling and fascinating insight into what it feels like to be losing touch with reality and evolving into madness. In general, she is a writer of both expressive description and yet admirable economy, often ambitious in the sociological underpinnings of the stories and the quality of the writing. Millar often delivers effective and ingenious "surprise endings," but the details that would allow the solution of the surprise have usually been subtly included, in the best genre tradition. One of the distinctions of her books, however, is that they would be interesting, even if you knew how they were going to end, because they are every bit as much about subtleties of human interaction and rich psychological detail of individual characters as they are about the plot. Millar was a pioneer in writing intelligently about the psychology of women. Even as early as the '40s and '50s, her books have a very mature and matter-of-fact view of class distinctions, sexual freedom and frustration, and the ambivalence of moral codes depending on a character's economic circumstances. Her earliest novels seem unusually frank. Read against the backdrop of Production Code-era movies of the time, they remind us that life as lived in the '40s and '50s was not as black-and-white morally as Hollywood would have us believe. While she was not known for any one recurring detective (unlike her husband, whose constant gumshoe was Lew Archer), she occasionally used a detective character for more than one novel. Among her occasional ongoing sleuths were Canadians Dr. Paul Prye (her first invention, in the earliest books) and Inspector Sands (a quiet, unassuming Canadian police inspector who might be the most endearing of her recurring inventions). In the California years, a few books featured either Joe Quinn, a rather down-on-his-luck private eye, or Tom Aragorn, a young, Hispanic lawyer. Sadly, most of Millar's books are out of print in America, with the exception of the short story collection The Couple Next Door and two novels, An Air That Kills and Do Evil In Return, that have been re-issued as classics by Stark House Press in California. In 1956 Millar won the Edgar Allan Poe Awards, Best Novel award for Beast in View. In 1965 she was awarded the Woman of the Year Award by the Los Angeles Times. In 1983 she was awarded the Grand Master Award by the Mystery Writers of America in recognition of her lifetime achievements.