Imagine: You've just found out you have nine brothers. Identical to you in every way. Except for the gene that made one of them a killer--
Artie Singleton's mother was dead. But among her possessions lay a letter. And inside was a secret that would shatter her son's world: In 1963, a shocking experiment at a famous fertility clinic had cloned ten identical male children from a single donor embryo. Artie Singleton was one of them.
Artie, a successful San Francisco entrepreneur, is now searching for his nine brothers. He assumes they will look just like him. But Artie finds some things he didn't expect: a sociopath among the clones determined to kill off the others--and a terrifying truth about their gene pool that could spell Artie's doom, or give him the cunning to stay alive.