During an early morning run on the beach along Maui's Kahului Bay, Gemi Kittredge discovers the body of a young woman. As though that wasn't upsetting enough, she knows her. Heleena was a member of her gym.

Gemi doesn't trust cops. They failed to help her in the past. So even though they assure her they're on the case now, she's not so sure. Armed with physical ability from being the top ranked MMA fighter on the island and a passion for helping vulnerable women and children, Gemi sets out on her own to hunt down Heleena's killer.

But as she gets closer to uncovering the truth, Gemi's deepest fears rise to the surface. If she's right about who the killer is, nowhere in her world is safe.