John Decker Supernatural Thriller Box Set, Books 4, 5, and 6

In "Books Four, Five, and Six" of the John Decker Supernatural Thriller series, three gripping tales unfold. The first, "Grendel's Labyrinth," pits John Decker against ancient secrets in Clareconnell as archaeologists unearth Grendel's remains, igniting dark pasts. Next, "Whitechapel Rising" thrusts Decker into a race against a resurrected Jack the Ripper after a body goes missing from a hidden lair. Finally, in "Black Tide," a team of marine archaeologists encounters a chilling presence aboard a mysteriously preserved World War II U-Boat, leading Decker into a harrowing confrontation with an unimaginable horror from the ocean depths.