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.

Detective Nate Quinn has just been cleared for active duty after a bombing killed 18 people, including his partner, and left him dealing with PTSD. His first case back on the job involves the murder of Stephen Shaw, and his only lead turns out to be an old friend, Grace Callahan - and her life is in grave danger. Someone believes Shaw gave his psychologist information before he died. Information for which they are willing to kill. 

Maggie Turner happily works as an assistant professor in the criminal justice department and lives a quiet life near campus. That is, until Jackson Lockhart bursts into her life unexpectedly. Then a cyclone of emotions erupt as she remembers the tragedy that once tore them apart. She'd often thought of him, but they'd agreed never to see each other again, and so far, they'd kept their promise. But today, Jackson has a good reason for breaking his promise. Maggie's life depends on it.  

Kait is about to give up hope of ever finding Vyper. All of that changes when he goes on a murderous spree taunting Kait with clues that she and homicide detective Sam Murdock must solve before her devious brother-in-law takes another life. As the body count rises, Sam discovers the killing spree is really about striking back at Kait. He must put everything on the line - including the relationship he's developed with Kait - to ensure her safety. The killer is waiting, watching her every move, and he won't stop until he's exacted his revenge.

A killer is lurking in the shadows...FBI agent Nina Brandt loves her job. Sure, she's made some enemies, but she knows she's making the world a better place. It's lonely at times, but she has good friends to get her through. It's a good life. Little does she guess that her past is about to come back and haunt her...in more ways than one. When Navy SEAL Quinn Stone learns that his geeky younger brother, Ty, hacked into the TSA's No Fly List, he would rather take a bullet than go to his former fiancée, Nina Brandt, for help.

Former pararescue jumper Orion Starr is haunted by the memory of a rescue gone wrong. He may be living alone in Alaska now, but the pain of his failure - and his injuries - has followed him there from Afghanistan. He has no desire to join Hamilton Jones' elite rescue team, but he also can't shirk his duty when the call comes in to rescue three lost climbers on Denali. Former CIA profiler and psychiatrist Jenny Calhoun's yearly extreme challenge with her best friends is her only escape from the guilt that has sunk its claws into her.

When FBI profiler Kaely Quinn's mother is diagnosed with cancer, Kaely takes time off work to go to Dark Water, Nebraska, to help her brother care for their mother. Upon her arrival, she learns of a series of fires in the small town, attributed by the fire chief to misuse of space heaters in the frigid winter. But Kaely is skeptical, and a search for a pattern in the locations of the fires bolsters her suspicions. After yet another blaze devastates a local family, Kaely is certain a serial arsonist is on the loose. 

Luke Michaels' relaxing camping trip ends when he witnesses a woman being thrown from a bridge. He dives into the river to save her, shocked to find her wrapped in chains. As a canine search and rescue volunteer, Luke has assisted many victims, but never a beauty whose defeated gaze ignites his primal urge to protect. When Megan Witherspoon's killers make it clear they won't stop, Luke fights to save her, but can he keep her alive long enough to find out who is after her? 

Forensic artist Hannah Perry's taking a much-needed vacation on a secluded island with her young son. But a young woman has been murdered - her body unidentified, her skull recently discovered by the police - and Hannah feels compelled to help find the killer. She decides to work on the reconstruction in the evenings while her son sleeps. But as the woman's face takes shape, an assailant invades Hannah's cabin and tries to end her life.

Kaely Quinn's talents as an FBI behavior analyst are impossible to ignore, no matter how unorthodox her methods. But when a reporter outs her as the daughter of an infamous serial killer, she's demoted to field agent and transferred to St. Louis. When the same reporter who ruined her career claims to have received an anonymous poem predicting a string of murders, ending with Kaely's, the reporter's ulterior motives bring his claim into question. But when a body is found that fits the poem's predictions, the threat is undeniable.

When research chemist Kiera Underwood receives a cryptic phone call about her twin brother, she tries to contact him to no avail. Her twin sense tingles, warning her that something is wrong. When he doesn't return her call and his supervisor at Oceanic Labs claims he didn't come into work, she heads to Cold Harbor. But when she arrives in town to find the door to her brother's house ajar, she races to the lab to question his fellow employees.    

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.

Montana rancher, Knox Marshall's, danger years are behind him. A former bull-rider, he now runs the Marshall family ranch, raising champion bucking bulls for the National Professional Bullrider's Expo (NBR-X). But although he's successful and wealthy, at 30, he can't help but wonder if his best years are behind him. His life is stable, expected and…boring. Kelsey Jones just wants a safe life, a family, a home. Well, at least when she's off stage. Onstage, she's the beautiful rising star of the country trio, the Yankee Belles. 

Former Army Night Stalker Rick Jordan usually has his camp for foster children to himself during the winter months. But someone has visited recently - leaving a trail of blood. One of the two clues left behind tips Rick off to the identity of his visitor, who soon turns up dead. The police deem it an accident, but Rick isn't convinced. With the help of private investigator Heather Shields, he sets out to decipher the remaining clue. Except someone doesn't want them to succeed - and will stop at nothing to keep them from finding the truth. 

Sadie Williams receives a cryptic and terrifying call from her scared sister. But when Sadie arrives at her identical twin's home, there's no sign of Katie, only evidence of a quick flight. The puzzling situation turns potentially deadly when intruders storm the house. With help from Brock Carrington, her ex-fiance and an ex-Marine, Sadie narrowly escapes. Brock is an injured veteran dealing with PTSD. He's finally piecing his life back together when his ex-fiancee needs his help. Can Brock reignite their relationship and find her missing twin before they're both killed?