Book Review: The Sixth Wicked Child, A 4MK Thriller Book 3, J.D. Barker Thriller: The Sixth Wicked Child, A 4MK Thriller Book 3, J.D. Barker The Fourth Monkey Killer, or 4MK, has terrorized Chicago for years. Detective Sam Porter has been trying to catch him, to the point of chasing leads across the country and […]
