From Jurassic Park and Westworld creator Michael Crichton comes an epic adventure filled with state-of-the-art technology and primal fear. They have eluded heat-seeking missiles, gone eyeball-to-eyeball with enraged 5,000-pound hippos, and hacked through a jungle curtain. Now a gorilla named Amy will lead a University experiment team back to her home—the fabled Lost City of Zinj. But what they don't know can be fatal, and once humans enter this world, they’ll be the endangered species.