Ellie's boyfriend kissed her goodnight and disappeared without a trace, never to be seen again... until now.

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A week before their high school graduation, Ellie and Austin part ways with a kiss, thinking they'd be seeing each other the following day. But Austin goes missing without a trace, leaving Ellie alone and wondering what went wrong.

Ten years later, Ellie is 28. She has a good job, a roof over her head, and her best friend, a cat named Selma. Having fully given up on finding Austin, she doesn't expect to run into him at a work conference-with a name tag reading William. They're instantly attracted to each other as if he never left. And while William's life leaves many questions unanswered, there's one thing he knows for sure: to keep Ellie safe, he has to stay far, far away. But can he?