Teddi McCoy is back! A cave deep within the Sierra Madre del Sur Mountains in southern Mexico holds the ancient secret to the abrupt disappearance of 300, 000 Olmecs, 2, 400 years ago. During the 1980s, Dex Lowe and his team of archaeologists found that cave and its hidden Olmec fortress. Instead of reaping wealth and fame, most suffered horrible deaths from a ruthless menagerie of otherworldly creatures. Now, Dex Lowe is one of the expedition's two survivors and police chief in Gator Creek, Florida. But his past rises to haunt him when horrific creatures abduct him. FBI Supervisor Teddi McCoy teams with her professional and romantic partner, Swamp Jack LaFevre, to save Dex. The two learn the true meaning of fear when they confront a gauntlet of enemies. A seductive voodoo witch. Bloodthirsty monsters. Lethal fortress traps. And chilling Olmec magic. Their quest leads them deep within the mountain stronghold where they discover the incredible truth behind the Olmec vanishing act. But Dex's life isn't the only one in danger. The creatures plan to destroy the world as we know it, and it's up to Teddi and Swamp Jack to stop them. The clock is ticking...