Charlotte’s best friend thinks Charlotte might be psychic. Her boyfriend thinks she’s cheating on him.

But Charlotte knows what’s really wrong: She is one of the Forgotten, a kind of angel on earth, who feels the Need—a powerful, uncontrollable draw to help someone, usually a stranger.

Now, at seventeen, Charlotte finds the Need has virtually taken over her life, and it’s becoming harder and harder to hide these compulsions—if anyone knew about the Need, they would think she was crazy.

There have been others before who’ve felt the Need, but they’re gone—disappeared in a burst of light and erased from the memories of everyone whose lives they had touched. It’s as though they never existed. This is the fate that awaits Charlotte. But the last thing Charlotte wants to do is disappear, to be Forgotten. She wants to stay with her best friend, whose life is spiraling out of control. She wants to lie in her boyfriend’s arms forever. She wishes she could just ignore the Need, but she can’t. And as everyone important in her life begins to slowly forget her, she has to decide if she’ll fight the Need in order to remain herself—no matter how dark the consequences.