The moment I met my sister's best friend Madison Baker, we immediately take a dislike to each other. She always thinks she's right, and worse, she usually is. We spend our four years at the academy torturing each other.

Years later, she's out of the Marines thanks to a roadside bomb. If you think that means she's fragile, you would be wrong. She's stronger than anyone I know, and we still drive each other crazy, and when one of our arguments ends up in a blazing hot kiss, and then we can't seem to keep our hands off each other.

When she tells me she's seen a murder, and no one else believes her, I stand up for her, because this is Madison—she's always right. Together, we sift through the meager evidence, trying to unearth the secrets someone is trying to hide. Neither one of us expected that it would draw us closer—or that a killer is hell bent on making sure those secrets stay buried.