Jack and his friends desperately search for the rest of the lost Loculi and confront the armies of Artemis in order to rescue Aly, who has been pulled back into Atlantis by King Uhla'ar.

Jack McKinley and his friends are in a life-or-death race to the Mausoleum at Halicarnassus. In the rubble of this Wonder of the Ancient World, they have to face down their own demons and engage in an epic battle with foes long gone. But when promises are broken, blood is spilled and the Select are left with no choice but to destroy the one thing that might have saved them all.

Journeying to the ancient city of Babylon when Bhegad tracks down Marco, the companions face a daunting choice involving a dire trap and a long-lost figure from Jack's past.

The reader's choices determine whether three friends will survive after being mysteriously transported back in time to when huge insects swarmed the skies and fearsome dinosaurs ruled.

"It's 1850, and you are continuing on the treacherous Oregon Trail. In this second book of four, you need to get to Devil's Gate, the halfway mark on your 2,000-mile journey West. Keep watch! Danger awaits you on your way to those eerie cliffs. Which path will you choose in the face of danger? With more than twenty possible endings, choose wrong and you'll never make it to Devil's Gate. Choose right and blaze a trail that gets you closer to Oregon...