Circle of Evil Series by Kylie Brant

Renowned forensic profiler Dr. Sophia Channing has analyzed the most notorious psychopaths in the country. So she's a natural to join Iowa's DCI task force to hunt the vicious sadist who has tortured and killed six women. Her insight into the killer's mind is just what's needed to stop him before he strikes again. DCI Agent Cam Prescott has had tough cases before. But trailing this serial killer will require all his focus... moreRenowned forensic profiler Dr. Sophia Channing has analyzed the most notorious psychopaths in the country. So she's a natural to join Iowa's DCI task force to hunt the vicious sadist who has tortured and killed six women. Her insight into the killer's mind is just what's needed to stop him before he strikes again. DCI Agent Cam Prescott has had tough cases before. But trailing this serial killer will require all his focus. He's haunted by the discovery of the six bodies buried in shallow graves in rural Iowa—and determined that there won't be a seventh. But when the killer sets his sights on Sophia, Cam fears he won't be in time to stop a madman from numbering yet another victim… less

An unmarked grave. Two killers.  And one woman who stands in their way... Forensic profiler Dr. Sophia Channing will be the star witness against Mason Vance, a brutal sexual sadist who kidnapped, raped and murdered six women. She can offer unique insight on the psychopath--she's his only victim who escaped alive. But the killer has other plans for her, even from behind bars. And when she's marked for assassination, Sophia realizes she's not finished with the violent psychopath either... moreAn unmarked grave. Two killers.  And one woman who stands in their way... Forensic profiler Dr. Sophia Channing will be the star witness against Mason Vance, a brutal sexual sadist who kidnapped, raped and murdered six women. She can offer unique insight on the psychopath--she's his only victim who escaped alive. But the killer has other plans for her, even from behind bars. And when she's marked for assassination, Sophia realizes she's not finished with the violent psychopath either. DCI Agent Cam Prescott is providing Sophia protective custody while she continues her work with his team. Vance's accomplice is still on the loose. And as more bodies show up with the mark of the killers, Cam and Sophia begin to realize the terrifying breadth of the crimes. Their time is running out to catch the second killer. He's already picked out his next victim. And he's willing to go through Sophia to get her. less