Inside a barn in Ann Arbor, Michigan, a scientist searching for an Alzheimer's cure throws a switch--and finds herself mysteriously transported into her husband's body. What begins as a botched experiment will change her life--and the world--forever. Over two decades later, all across the planet, 'flash' technology allows individuals the ability to transfer their consciousness into other bodies for specified periods, paid, registered and legal. Society has been utterly transformed by the process, from travel to warfare to entertainment; 'Be anyone with Anyone' the tagline of the company offering this ultimate out-of-body experience. But beyond the reach of the law and government regulators is a sordid black market called the darkshare, where desperate 'vessels' anonymously rent out their bodies, no questions asked for any purpose--sex, drugs, crime... or worse.