FBI Special Agent Lincoln St. John is living his own personal nightmare. When the woman he loves, Allison Radcliffe, is killed, he devotes his life to tracking down the killers and making them pay for their crimes. He expected it to be a challenge. What he never expected was to find Allison very much alive shortly after her "murder." As his anger and hurt mix with relief, Linc isn't sure how he's supposed to feel. One thing he does know for sure: He and Allison will have to work together to stop a killer before she dies a second time - this time for good.

For the past year, Chloe St. John has been working as a K-9 cop with her German shepherd partner, Hank. After being dumped by her fiance for another woman, Chloe has decided Hank is just about the only male she likes. She's over the whole romance thing and focuses her attention on doing her job because a serious case of human trafficking with connections to her missing cousin just landed in her lap.

Police officer Isabelle St. John loves her crazy, loud law-enforcement family. And she knows they'll be there for her when things get tough. Like when her partner is murdered and she barely escapes with her own life. Determined to discover exactly what happened, Izzy's investigation sends her headfirst into a criminal organization, possibly with cops on the payroll - including someone from her own family. With her dead partner's handsome homicide detective brother Ryan shadowing her every move, Izzy's head is spinning.

As a former field surgeon in Afghanistan, Heather Fontaine is used to life-or-death situations. She just didn't expect them to follow her home. When she returns from a party to find that someone has broken into her house - and threatened her friends - she assumes it is the stalker who has been following her and creeping her out. She hopes to find safety and peace of mind by leaving the city and hiding out in a small town. But trouble has followed her even there.

Honorably discharged from the Army after an explosion nearly killed her, former military psychiatrist Brooke Adams has set up shop to help others - but her days of helping military personnel are over. She's got her own battles to fight from her time overseas, and she's not equipped to take on more. Former Army Special Ops Sergeant First Class Asher James could handle anything war sent his way - terrorists, bombs, bullets. The only thing that scares him now is sleep. Finally convinced that he needs help, Asher makes an appointment with a counselor.