Erica O'Donnell is hardly the quintessential high school senior. She doesn't have a driver's license. She's never been to a concert. Sports are out of the question. She doesn't own a pair of heels. No boy has ever asked her out. All of this for good reason: Erica faints. A lot. And at the most inconvenient times.

Chronic fainting, also known as syncope, keeps Erica on the sidelines as the odd-girl out. Luckily, Lindsay Bennett hovers nearby to catch Erica each time she nose-dives to the floor. Lindsay isn't only Erica's best friend—for four years she's been her savior.

But things are about to change.

When Lindsay breaks up with her boyfriend Adam to pursue a married man, Erica is intrigued. But as Lindsay's relationship intensifies, Erica finds her own world spinning out of control: from covering up her friend's affair, to hiding her feelings for Adam, to casting suspicion when a string of arson fires sweeps through the town.

Gradually peeling away layers of deception from those she trusts the most, Erica must decide how far she is willing to go to uncover truths—and how many people will get burned in the process.