On a remote island in the Pacific, Corpus scientists have taken test tube embryos and given them life. These beings—the Vitros—have knowledge and abilities most humans can only dream of. But they also have one enormous flaw. Seventeen-year-old Sophie Crue is determined to get to Skin Island and find her mother, a scientist who left Sophie behind years ago. With the help of Jim Julien, a young charter pilot, she arrives--and discovers a terrifying secret she never imagined: she has a Vitro twin, Lux, who is the culmination of Corpus's dangerous research. Now Sophie is torn between reuniting with the mother who betrayed her and protecting the genetically enhanced twin she never knew existed. But untangling the twisted strands of these relationships will have to wait, for Sophie and Jim are about to find out just what happens when science stretches too far beyond its reach.

Pia has grown up in a secret laboratory hidden deep in the Amazon rain forest. She was raised by a team of scientists who have created her to be the start of a new immortal race. But on the night of her seventeenth birthday, Pia discovers a hole in the electric fence that surrounds her sterile home--and sneaks outside the compound for the first time in her life. Free in the jungle, Pia meets Eio, a boy from a nearby village. Together, they embark on a race against time to discover the truth about Pia's origin--a truth with deadly consequences that will change their lives forever. Origin is a beautifully told, shocking new way to look at an age-old desire: to live forever, no matter the cost.