The Host

Melanie Stryder refuses to fade away.
Our world has been invaded by an unseen enemy that takes over the minds of human hosts while leaving their bodies intact. But Wanderer, the invading soul who occupies Melanie's body, finds its former tenant refusing to relinquish possession of her mind.
As Melanie fills Wanderer's thoughts with visions of Jared, a human who lives in hiding, Wanderer begins to yearn for a man she's never met. Soon Wanderer and Melanie--reluctant allies--set off to search for the man they both love.
Featuring one of the most unusual love triangles in literature, THE HOST is a riveting and unforgettable novel about the persistence of love and the essence of what it means to be human.