After 30 years, it's finally time for the first meeting between Carl Kolchak, the Nightstalker, and the black and evil horror which is the Cthulhu Mythos, H.P. Lovecraft's enduring world of gods and monsters! Kolchak has seen it all, from vampires and zombies to witches, ghosts and even the minions of Hell, itself. By rights, nothing should shake this indomitable reporter anymore. But, when he starts to follow the trail begun by the photographing of a strange sea creature, one more reminiscent of the creature from the black lagoon than a shark or tuna, he suddenly finds himself being drawn into a nightmare world so fantastic, so utterly alien and frighteningly dark that even his massive psychic defenses begin to crumble. For once, Kolchak isn't just following a story. This time, he's crossing the threshold into another reality. One which could possibly destroy both his mind, and the entire world!