Deep in the African rain forest, near the legendary ruins of the Lost City of Zinj, an expedition of eight American geologists are 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 …