After a harrowing attempt on a judge's life at the courthouse, Deputy US Marshals Madison James and Jonas Quinn are tasked with finding a missing woman and an endangered child in connection to the murder of the judge's wife. What seems like a straightforward case becomes hopelessly tangled when the marshals discover that the woman they are searching for is in witness protection and the Amber Alert put out for the missing child has put two lives in danger. Madison and Jonas are forced into a race to find the woman and the child before the men who want her dead discover her location.

US Marshals Madison James and Jonas Quinn are thrust into a high-profile case when they are called on to transport two prisoners across the country on a private plane. But when the plane experiences engine trouble en route from the Pacific Northwest to Colorado, the pilots crash-land the aircraft deep in the heart of the sprawling Salmon-Challis National Forest. When Madison and Jonas regain consciousness, they find both pilots and one prisoner dead - and one fugitive on the run.

Research scientist Caitlyn Lindsey is convinced that someone is taking out her team one by one. First, a friend and research partner was killed in a home invasion. Three months ago, her boss died in a suspicious car accident. Four days ago, another partner supposedly committed suicide. And now Caitlyn herself has miraculously survived a hit-and-run. Afraid for her life with nowhere to turn, she reaches out to one of the victim's husbands, Detective Josh Solomon.

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.

When FBI agent Jack Shannon arrives in Corpus Christi, Texas, he is focused on one thing: finding the man who has been selling encrypted government secrets to the Chinese through online birding chat rooms. But when a senator is shot during a hunting trip and the woman he was with is abducted, Jack agrees to join the search - especially when he discovers that the kidnapping victim is Aubrey Grayson, a woman he was once in love with. As the search continues, it becomes clear the senator may not have been the intended victim....

EMS helicopter pilot Penny Carlton is used to high stress situations, but being forced to land on a mountain in a raging storm with a critical patient - and a serial killer on the loose - tests her skills and her nerve to the limit. She survives with FBI Special Agent Holt Satterfield's help. But she's not out of the woods yet.

Luke has teamed up with Faith before, but he's not convinced she's up for the job, and she's not convinced he's telling her everything he knows. As more agents are targeted, Luke and Faith will have to learn to trust each other and work together to bring a killer to justice and prevent any more names from joining their fallen brothers and sisters on the Secret Service Wall of Honor.

When Mia Blackburn returns to Shadow Lake to inherit her uncle’s property, she doesn’t expect a threatening warning before she even reaches the rustic resort. And when a fire traps her in the burning barn that very day, she fears she won’t get out alive. Just in time, Ryan Maddox, her ex-boyfriend and Shadow Lake Survival owner, rescues her from the deadly blaze. She’s thankful for his rescue, but after their tumultuous breakup, he’s the last person she wants to see.

As a former smokejumper, arson investigator Bri Tucker knows her way around fires. But after a mysterious blaze takes the life of a former colleague, Bri inherits a curious puzzle from him that raises questions about several fiery deaths. Someone, however, doesn’t want her picking up where he left off in search of answers. When she teams up with ATF Special Agent Marc Davis to solve the puzzle, the case heats up—as does the attraction between them.

Radio-talk-show host Eve Reilly is used to backlash from her pot-stirring on-air commentary and interviews. But now it seems a disgruntled listener is resorting to more than angry words to express their displeasure. When a suspicious package arrives on her doorstep, Eve turns to law enforcement for help. Police Detective Brent Lange can't find any evidence to link the string of unsettling incidents that follows, but he's convinced they're connected. As the harassment grows more menacing, it becomes clear someone wants Eves voice silenced - permanently.

Elite Guardians bodyguard/former sniper Christina Sherman has protected uncooperative clients before—but this time, well, her client is bossy, headstrong, and occasionally eats off the floor. Yes, he’s a highly trained military working dog, but certainly her skills could be put to better use, right? Not according to former Special Forces Air Commando Grey Parker. He needs her help to protect his dog while he undergoes an experimental surgery that could restore his ability to walk.

Detective Londyn Steele is thrown into the deep end when she’s assigned to find an abducted socialite. Problem is, her family’s company, Steele Guardians, was supposed to protect the family matriarch at her 80th birthday party when she disappeared, and Londyn fears her investigation will expose problems in her family’s company and bring them down. Especially when County Detective Nate Ryder declares jurisdiction over the scene and Londyn must take a back seat in one of the most important cases she’s ever investigated.

Nine-year-old Annie Pederson's life changed the night her sister was kidnapped. The two had been outside playing on a dock, and Annie never forgave herself for her role in her sister's disappearance. Twenty-four years later and now a law enforcement ranger, Annie is still searching for answers as she grieves a new loss: the death of her husband and parents in a boating accident. But Annie and her eight-year-old daughter, Kylie, aren't the only people in the town of Rock Harbor whose lives have been marred by tragedy.

The Natchez Trace National Parkway stretches 444 miles from Nashville to Natchez, the oldest town on the Mississippi River. It's the perfect road for a relaxed pleasure drive. Unfortunately for park ranger Luke Fereday, lately it's being used to move drugs. Sent to Natchez to infiltrate the organization at the center of the drug ring, Luke arrives too late to a stakeout and discovers the body of his friend, park ranger John Danvers.

When one Coast Guard officer is found dead and another goes missing, Coast Guard Investigative Service special agent Finn Walker faces his most dangerous crime yet. His only clues are what little evidence remains aboard the dead officer's boat, and the direction the clues point to will test Finn and the Guard to their limits. When investigative reporter - and Finn's boss's sister - Gabby Rowley arrives, her unrelenting questions complicate an already volatile situation. Now that she's back, the tug on Finn's heart is strong.

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.

US Marshals Madison James and Jonas Quinn are thrust into a high-profile case when they are called on to transport two prisoners across the country on a private plane. But when the plane experiences engine trouble en route from the Pacific Northwest to Colorado, the pilots crash-land the aircraft deep in the heart of the sprawling Salmon-Challis National Forest. When Madison and Jonas regain consciousness, they find both pilots and one prisoner dead - and one fugitive on the run.

As a forensic genealogist, Willow Anderson is following in her late grandfather's footsteps in her quest for answers about a baby abducted from the hospital more than 20 years ago. The case may be cold, but things are about to heat up when someone makes an attempt on her life to keep her from discovering the truth. Ex-FBI agent - and Willow's ex-flame - Austin McKade readily offers his help to protect the woman he never should have let get away.

Tara Parrish is the only person ever to survive an attack by the Lone Wolf bomber. Scared and emotionally scarred by her near death, she goes into hiding with only one plan - to stay alive for another day. She knows he's coming after her, and if he finds her, he will finish what he started. Agent Cal Riggins has had only one goal for the past six months - to save lives by ending the Lone Wolf's bombing spree. To succeed, he needs the help of Tara Parrish, the one person who can lead them to the bomber.

DEA Agent Doug Bridges is angry to realize his stepsister has been kidnapped after her night shift at the hospital. He goes into full agent mode to investigate, but soon runs into dead ends. Winter in northern Wyoming is no joke and he needs help, fast. When he’s referred to the Sullivan K-9 Search and Rescue team, he convinces Maya Sullivan and her Siberian Husky Zion to help him find Emily.

After escaping her abusive foster parents 13 years ago, Hailey Donovan thought her nightmare was over. Gatlinburg, Tennessee, had been a safe place to live—until she's nearly hit by gunfire while hiking the Smoky Mountains. Her instincts are to avoid law enforcement, especially handsome park ranger Rock Wilson, but when more gunfire echoes around them, they're forced to work together to escape. More attempts against Hailey convinces her to leave the city to start over someplace new.

When Marianna Santino's roommate is killed, Detective Ethan O'Hara can't fathom the motive. Then he realizes the deaf teacher was the intended target. Marianna must have something the murderer desperately wants. But what? Digging for the truth, the guarded cop tries to learn everything he can about Marianna. Her world. Her family. Her beauty, faith, and fierce independence. In spite of himself, Ethan finds that he can't keep his feelings at bay. Soon, he's willing to risk everything to lay the silent terror stalking Marianna to rest.

Mia Tathers is an ATF Special Agent. It’s not like she needs Conroy to protect her. However, when it becomes clear someone is recreating her biggest mistake, Mia has to face her own inability to forgive Conroy for what he took from her. It’s the only way she’ll stay alive.

Psychology professor and criminal profiler Taylor Martin prides herself on being able to solve any crime except the one she wants most desperately to solve - the disappearance of her father 20 years ago. When she finally has a lead on his whereabouts, Taylor returns home to Logan Point, Mississippi, to investigate. But as she works to uncover the truth, someone else will do almost anything to keep her from it.

After a harrowing experience with an obsessed patient, oncology nurse practitioner Leigh Weston needed a change. She thought she'd left her troubles behind when she moved home to Carrington, North Carolina, and took a job in the emergency department of the local hospital. But when someone tampers with her brakes, she fears the past has chased her into the present. She reaches out to her high school friend turned homicide investigator, Ryan Parker, for help. Ryan finds satisfaction in his career, but his favorite way to use his skills is as a volunteer underwater investigator.

Mercy Brennan followed in her father's footsteps in a law enforcement career, but she has no interest in any other connection to him. A US Marshal in St. Louis, Missouri, she's assigned to a joint task force with the St. Louis PD that puts her back into contact with her father and in the sights of St. Louis's most powerful gang. When the gang has reason to believe Mercy has possession of some highly sensitive and incriminating information, her boss assigns Mark St. Laurent - a Deputy US Marshal and Mercy's ex-boyfriend - to get her out of town.

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.

This collection includes Survival, Hunted, and Frequency. Survival: When one of the men in charge of storing food for the town of Shadow Ridge is found murdered execution style, it's up to Jace McQuaid to find the killer. Hunted: Levi McQuaid searches for the sister of an old friend, Ava Solomon, but the situation takes a deadly turn when the search leads them on a dangerous trek across the west Texas desert. Frequency: Four deaths, likely tied to arsenic-tainted water, leave the town of Shadow Ridge frantic for answers. But that isn't the only nightmare Tess McQuaid is facing.

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 missing teens begin turning up dead in a small Southern town, the FBI sends in Special Agent Samantha Cash to help crack the case. Her methods are invisible, and she never quits until the case is closed.