Deep in the African rain forest, near the legendary ruins of the Lost City of Zinj, an expedition of eight American geologists is mysteriously and brutally killed in a matter of minutes. Ten thousand miles away, Karen Ross, the Congo Project Supervisor, watches a gruesome video transmission of the aftermath: a camp destroyed, tents crushed and torn, equipment scattered in the mud alongside dead bodies — all motionless except for one moving image — a grainy, dark, man-shaped blur.

In San Francisco, primatologist Peter Elliot works with Amy, a gorilla with an extraordinary vocabulary of 620 “signs,” the most ever learned by a primate, and she likes to fingerpaint. But recently, her behavior has been erratic and her drawings match, with stunning accuracy, the brittle pages of a Portuguese print dating back to 1642 . . . a drawing of an ancient lost city. A new expedition — along with Amy — is sent into the Congo where they enter a secret world, and the only way out may be through a horrifying death.

"Find the Elves and return them to the world of Men!" the shade of the Druid Allanon had ordered Wren. It was clearly an impossible task. The Elves had been gone from the Westland for more than a hundred years. There was not even a trace of their former city of Arborlon left to mark their passing. No one in the Esterland knew of them — except, finally, the Addershag.

The blind old woman had given instructions to find a place on the coast of the Blue Divide, build a fire, and keep it burning for three days. "One will come for you." Tiger Ty, the Wing Rider, had come on his giant Roc to carry Wren and her friend Garth to the only clear landing site on the island of Morrowindl, where, he said, the Elves might still exist, somewhere in the demon-haunted jungle.

Now she stood within that jungle, remembering the warning of the Addershag: "Beward, Elf-girl. I see danger ahead for you... and evil beyond imagining." It had proved all too true. Wren stood with her single weapon of magic, listening as demons evil beyond all imagining gathered for attack. How long could she resist?

And if, by some miracle, she reached the Elves and could convince them to return, how could they possibly retrace her perilous path to reach the one safe place on the coast?