There's a killer on the loose in Galveston, targeting law enforcement officials and using a fatal injection of snake venom to take them down. Authorities have reasons to believe the Veneno gang is behind the hits, and FBI agents Leah Riesel and Jon Colbert team up to track down those responsible. Their best lead is an eyewitness who identifies a young man dumping the third body on a church doorstep. But their suspect has gone into hiding, and those closest to him are reluctant to reveal anything that might help investigators find him.

Airport Ranger volunteer Stacy Broussard expected a peaceful Saturday morning ride around the perimeter of Houston's airport. What she encounters instead is a brutal homicide and a baffling mystery. Next to the body is an injured dog, the dead man's motorcycle, and a drone armed with a laser capable of taking down a 747. Though FBI Special Agent Alex LeBlanc sees a clear-cut case of terrorism, his past has taught him to be suspicious of everyone, even witnesses. Even bleeding-heart veterinarians like Stacy.

After a whirlwind romance, Taryn Young is preparing to board a plane at Houston International Airport, bound for a dream honeymoon, when a bomb decimates the terminal. Injured but still alive, she awakens to discover her husband is missing, and they're both considered prime suspects in the attack. Further, the FBI is convinced her husband isn't who he appears to be. Agent Grayson Hall's number-one priority is to catch those responsible for the day's act of terror.

Heather Lawrence’s long-awaited vacation to Salzburg wasn’t supposed to go like this. Mere hours into the transatlantic flight, the Houston FBI agent is awakened when passengers begin exhibiting horrific symptoms of an unknown infection. As the virus quickly spreads and dozens of passengers fall ill, Heather fears she’s witnessing an epidemic similar to ones her estranged husband studies for a living - but this airborne contagion may have been deliberately released.

On the family’s Brazos River Ranch in Texas, Avery Elliott helps run her grandfather’s commercial construction business. Raised by Senator Elliott, Avery has never doubted her grandfather is the man of integrity and faith she’s always believed him to be . . . until the day she finds him standing with a gun over the body of a dead man. To make matters worse, Avery’s just discovered a billing discrepancy for materials supposedly purchased for construction of the Lago de Cobre Dam.

Reeling from a negotiation gone wrong, FBI Special Agent April Ramos is caught off guard when a frazzled young woman shoves a crying baby into her arms, then disappears. Worry for the child's safety quickly turns to fear when a man claiming to be the girl's father abducts them at gunpoint. April puts her hostage negotiation skills to use to learn more about who she's dealing with: Jason Snyder, a fugitive accused of murder. As Jason spins a tall tale about being framed for the killing of his business partner, April must sort through his claims to find the truth.

Fifteen years ago, Shelby Pearce confessed to murdering her brother-in-law and was sent to prison. Now she’s out on parole and looking for a fresh start in the small town of Valleysburg, Texas. But starting over won’t be easy for an ex-con. FBI Special Agent Denton McClure was a rookie fresh out of Quantico when he was first assigned the Pearce case. He’s always believed Shelby embezzled $500,000 from her brother-in-law’s account. So he’s going undercover to befriend Shelby, track down the missing money, and finally crack this case.

Special Agent Meghan Connors's dream of one day protecting the president of the United States is about to come true. Only one assignment stands in her way. After the vice president's rebellious daughter is threatened, Meghan is assigned to her protective detail on a secluded ranch in West Texas. Unfortunately, working with Special Agent in Charge Ash Zinders may be as tough as controlling her charge. Ash has a reputation for being critical and exacting, and he's also after the same promotion as Meghan. Then the threats escalate and security on the ranch is breached....

To the FBI, it's a cold case. To Kariss Walker, it's a hot idea that could either reshape or ruin her writing career. And it's a burning mission to revisit an event she can never forget. Five years ago, an unidentified little girl was found starved to death in the woods behind a Houston apartment complex. A TV news anchor at the time, Kariss reported on the terrifying case. Today, as a New York Times best-selling author, Kariss intends to turn the unsolved mystery into a suspense novel.

When the long-awaited reunion between Risa and her brother, Trenton, ends in tragedy, Risa is riddled with guilt, unable to cope with the responsibility she feels over his death. On leave from the FBI, Risa returns to her former career as an English teacher at a local college, only to see her past and present collide when one of her students, Carson Mercury, turns in an assignment that reads like an eyewitness account of her brother’s murder, with details never revealed publicly.

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.

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.

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.

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.

Airport Ranger volunteer Stacy Broussard expected a peaceful Saturday morning ride around the perimeter of Houston's airport. What she encounters instead is a brutal homicide and a baffling mystery. Next to the body is an injured dog, the dead man's motorcycle, and a drone armed with a laser capable of taking down a 747. Though FBI Special Agent Alex LeBlanc sees a clear-cut case of terrorism, his past has taught him to be suspicious of everyone, even witnesses. Even bleeding-heart veterinarians like Stacy.

Special Agent Meghan Connors's dream of one day protecting the president of the United States is about to come true. Only one assignment stands in her way. After the vice president's rebellious daughter is threatened, Meghan is assigned to her protective detail on a secluded ranch in West Texas. Unfortunately, working with Special Agent in Charge Ash Zinders may be as tough as controlling her charge. Ash has a reputation for being critical and exacting, and he's also after the same promotion as Meghan. Then the threats escalate and security on the ranch is breached....

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.

Wynter Evans is a promising young reporter for a television station in St. Louis, but even a bright future doesn't take away her pain over the disappearance of her brother nine years ago. So when she stumbles across a photograph of a boy with an eerie resemblance to him, she can't pass up the chance to track him down. With research for work as her cover, she sets out with one of the station's photos for the place where the picture was taken: the town of Sanctuary.

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.

No one needs to push Nikki Boyd to excel on the Tennessee Missing Person Task Force. The case of her own missing sister, still unsolved after 10 years, is the driving force in her work. When a Polaroid photo of a missing girl shows up at a crime scene, Nikki quickly recognizes similarities to the past. The closer she gets to the abductor, the more she feels that this case is getting personal and that she is not the hunter at all - but actually the one being hunted.

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.

After a whirlwind romance, Taryn Young is preparing to board a plane at Houston International Airport, bound for a dream honeymoon, when a bomb decimates the terminal. Injured but still alive, she awakens to discover her husband is missing, and they're both considered prime suspects in the attack. Further, the FBI is convinced her husband isn't who he appears to be. Agent Grayson Hall's number-one priority is to catch those responsible for the day's act of terror.

In the little town of Walton, Georgia, everybody knows your name - but no one knows your secret. At least that's what Lane Kent is counting on when she returns to her hometown with her five-year-old son. Dangerously depressed after the death of her husband, Lane is looking for hope. What she finds instead is a dead body. Lane must work with Walton's newest deputy, Charlie Lynch, to uncover the truth behind the murder. But when that truth hits too close to home, she'll have to decide if saving the life of another is worth the cost of revealing her darkest secret.

Fifteen years ago, Shelby Pearce confessed to murdering her brother-in-law and was sent to prison. Now she’s out on parole and looking for a fresh start in the small town of Valleysburg, Texas. But starting over won’t be easy for an ex-con. FBI Special Agent Denton McClure was a rookie fresh out of Quantico when he was first assigned the Pearce case. He’s always believed Shelby embezzled $500,000 from her brother-in-law’s account. So he’s going undercover to befriend Shelby, track down the missing money, and finally crack this case.

Fifteen years after a serial killer tormented them, Addie and Jacob are living very different lives. As an FBI Profiler, Addie is on the edge of burnout. When she returns home, she has to face down every nightmare she's ever had. Is the resurgence of a series of all too familiar deadly crimes the work of a former ally, or a mastermind who has been pulling her strings all along?

Paige Rogers is a former CIA agent who lost all she treasured seven years ago when her entire team was killed in a covert mission. She blames their leader - Daniel Keary - whom Paige believes betrayed them. Disillusioned and afraid for her life, she disappeared and started a new life as a small-town librarian. But when Keary announces his candidacy for governor of her state, he comes after Paige to ensure that she won't ruin his bid for office.

Sometimes, Kaia Oana thinks her dolphins are more humane than humans. As a mammal intelligence researcher, Kaia has learned a thing or two about the goodness and intelligence of dolphins - and as a natural scientist in close proximity to weapons developers, she's learned a thing or two about humans as well. When a tourist catamaran explodes off the coast of the Hawaiian island of Kauai, Kaia and her trained dolphin, Nani, rush to aid the search and rescue effort. After hours of searching, an exhausted Kaia is pulled from the water by Lieutenant Commander Jesse Matthews of the US Navy.

Tara Lancaster can sing Amazing Grace in three harmonies, two languages, and interpret it for the hearing impaired. She can list the Bible canon backward, forward, and alphabetized. And the only time she ever missed church was at seventeen because she had pneumonia and her mom made her stay home. But when her life shatters around her and her reputation is left in ruins, Tara decides escape is the only option. She flees halfway across the country to dog-sit, but the quiet anonymity she needs isn't waiting in her sister's house.

When Nolan Orr, founding member of Lost Lake Locators, and his teammates receive a mysterious invitation to a secluded mansion on Lost Island for what seems to be an innocent game night with his closest college friends, he eagerly agrees to attend. Not only to enjoy the event with friends who were more like family to him than his actual family, but to figure out which friend set up the fun but unusual night.