Richard Lockridge (1898–1982) was one of the most popular names in mystery fiction from the 1940s through the ’70s. He is best known for the prolific detective series he wrote with his wife, Frances, including the Mr. and Mrs. North Mysteries, Nathan Shapiro Mysteries, and Captain Heimrich Mysteries. Upon Frances’s death in 1963, Richard continued writing, delivering new and much darker Nathan Shapiro and Captain Heimrich books. His works have been adapted for Broadway, film, television, and radio.