Rule #1: Don't fall for a man with secrets.

Rule #2: Definitely don't attach your life to his before you know what they are.

Cal Lewis has spent his whole life protecting himself. Shannen was supposed to change that. But when he's abruptly arrested, the flicker of doubt about his innocence on Shannen's face forces his instincts into gear: push her away before she can leave him first.

Shannen Morgan never thought she'd doubt him, not even for a second, but a second was all it took to lose him. Now she's left picking up the pieces of a life that fell apart overnight, wondering if there was anything she could have done differently, and hating how much she still wants him anyway.

They're both miserable, and one weak, reckless night together only makes it worse.

Because the truth is more complicated than either of them knows. Someone set Cal up—and as the pieces surface, Shannen and Cal find themselves holding secrets of their own, each one afraid of what the other might do with the truth.

When an emergency neither of them sees coming forces everything into the open, every piece of the puzzle they've both been too afraid to share paints a picture that makes them wonder if there is anyone left they can trust.

And just when they think they've finally found their way back to each other, Callum's past reaches out one more time with an accusation that could take him away from her for good.

Now, Shannen has to decide: protect her heart, or fight for a man who's never once stopped fighting for her—even when she didn't know it.