Blood EchoBlood Echo

Charlotte is an experiment. And a weapon. Enabled by a superpower drug, she's partnered with a shadowy pharmaceutical company to hunt down and eliminate society's most depraved human predators. But her latest mission goes off the rails in a horrifying way. Unsettled by her own capacity for violence, Charlotte wants some time to retreat so she can work on her new relationship with Luke, a sheriff's deputy in the isolated Central California town she now calls home. If only the threats hadn't followed Charlotte there.