Nothing about her new client is what service dog trainer Marcia Banks expected—from the posh house that says family money to his paranoid preoccupation with his sister's love life—but when Roger Campbell dangles a thousand-dollar retainer under her nose, she can't resist playing private detective.

In between training sessions, Marcia digs into the sister's boyfriend's sketchy past. But the deeper she digs, the more questions arise. How is a disastrous frat party five years ago linked to blackmail, prostitutes, and murder today? And who's driving the black SUV that keeps trying to turn Marcia and her dog Buddy into roadkill?

She can't let it go, not when there are innocents at risk who are depending on her to find the truth. But the deepest, darkest truth is the one she wishes she never uncovered.