A decade after scientists discover that everyone has a "soulmate gene" that they share with just one other person, five people meet their matches, only to be torn by shocking secrets.

"Rosalind Franklin knows if she just takes one more X-ray picture--one more after thousands--she can unlock the building blocks of life. Never again will she have to listen to her colleagues complain about her, especially Maurice Wilkins who'd rather conspire about genetics with James Watson and Francis Crick than work alongside her. Then it finally happens--the double helix structure of DNA reveals itself to her with perfect clarity. But what happens...

Having escaped from camp and on the run from government agents, Davy is rescued by Caden and his rebel group, but she is still unsure of her safety.

Rick's brother, Keith, a prominent zoologist at NYU, walks out of his office one day and disappears. The only clue they have are his brother's book, which mentions "the God Gene." A million or so years ago, a gene designated hsa-mir-3998 appeared as if by magic from the junk DNA of the hominids who eventually evolved into Homo sapiens. It became a key player in brain development—specifically creativity—and laymen started calling it "the God Gene."...

Veteran reporter Jack McEvoy has taken down killers before, but when a woman he had a one-night stand with is murdered in a particularly brutal way, McEvoy realizes he might be facing a criminal mind unlike any he's ever encountered. Jack investigates--against the warnings of the police and his own editor--and makes a shocking discovery that connects the crime to other mysterious deaths across the country. Undetected by law enforcement, a vicious...

Grace, sixteen, fears that she will succumb to the schizophrenia that took her mother away, while she and her father work for a genetics lab rushing to find a cure.

After the murder of his father, Noah Shaw uses his inheritance to move to New York with his girlfriend Mara Dyer and their friends, where they investigate the suicides of other Carriers and their Gifts begin to lead them on diverging paths.