Best-selling author John F. Dobbyn, a graduate of Harvard College, Boston College Law School, and Harvard Law School, is a former professor of law at Villanova Law School where he taught criminal, constitutional, and corporate law. Prior to his teaching career, Dobbyn served three years in the Air Force and practiced criminal and civil trial work. Twenty-five of his short stories have been published in Ellery Queen's Mystery Magazine.

Dobbyn is the author of the award-winning Michael Knight and Lex Devlin legal thriller series. He is a Boston native and now resides in Valley Forge, Pennsylvania, with his wife, Lois. Deadly Depths is his seventh novel.