Robert B. Parker was the author of seventy books, including the legendary Spenser detective series, the novels featuring Chief Jesse Stone, and the acclaimed Virgil Cole/Everett Hitch Westerns, as well as the Sunny Randall novels. Winner of the Mystery Writers of America Grand Master Award and long considered the undisputed dean of American crime fiction, he died in January 2010.

Reed Farrel Coleman, author of the New York Times bestselling Robert B. Parker's Debt to Pay, has been called a "hard-boiled poet" by NPR's Maureen Corrigan and the "noir poet laureate" in The Huffington Post. He has published twenty-five previous novels, including nine books in the critically acclaimed Moe Prager series, and most recently, What You Break, featuring Gus Murphy. A three-time winner of the Shamus Award, he has also won the Anthony, Macavity, Barry, and Audie Awards. Coleman lives with his family on Long Island.