About A.J. MacKenzie A. J. MacKenzie is the pseudonym of Marilyn Livingstone and Morgen Witzel, a collaborative Anglo-Canadian husband-and-wife team of writers and historians who live in Devon and do as much of their writing as possible on the beach or on the moors. Books by A.J. MacKenzie The Body on the Doorstep by (author) A.J. MacKenzie read by Ric Jerrom
