When a mysterious envelope arrives for Jake Ransom, he and his older sister, Kady, are plunged into a gripping chain of events. An artifact found by their parents—on the expedition from which they never returned—leads Jake and Kady to a strange world inhabited by a peculiar mix of long-lost civilizations, a world that may hold the key to their parents' disappearance.
But even as they enter the gate to this extraordinary place, savage grackyls soar across the sky, diving to attack. Jake's new friends, the pretty Mayan girl Marika and the Roman Pindor, say the grackyls were created by an evil alchemist—the Skull King. And as Jake struggles to find a way home, it becomes obvious that what the Skull King wants most is Jake and Kady—dead or alive.
About the Author
James Rollins is the New York Times bestseller of thrillers translated into forty languages. His Sigma series has been lauded as one of the "top crowd pleasers" (New York Times) and one of the "hottest summer reads" (People Magazine). Acclaimed for his originality, Rollins unveils unseen worlds, scientific breakthroughs, and historical secrets—and he does it all at breakneck speed.
Rebecca Cantrell's Hannah Vogel mystery novels have won the Bruce Alexander and Macavity awards and been nominated for the Barry and Romantic Times Reviewers Choice awards; her critically-acclaimed novel, iDrakula, was nominated for the APPY award and listed on Booklist's Top 10 Horror Fiction for Youth. She and her husband and son just left Hawaii's sunny shores for adventures in Berlin.