Sam Blackman is an angry man. A chief warrant officer in the criminal investigation detachment of the U.S. military, he lost a leg in Iraq and has been outspoken in his criticism of his medical treatment. Then, ex-marine and fellow amputee Tikima Robertson walks into his hospital room, hinting that she has an opportunity for Sam to use his investigative skills. But before she can return, Tikima is murdered.

The Singularity - the looming point of no return when Artificial Intelligence surpasses human cognitive abilities, with consequences no one can foresee, and only a handful of people understand. Rusty Mullins, ex-Secret Service, has never heard of the Singularity. He only knows that after the deadly challenges of his last job for security firm Prime Protection, he swore he'd stop risking his life on assignments. Then his good friend Ted Lewison, head of Prime Protection, asks him back for a routine mission guarding scientist Dr. Lisa Li and her seven-year-old nephew, Peter.

At seventy-five-years-old, Ethel Fiona Crestwater is used to being underestimated. She looks like someone's grandma, although she's never married or had children; petite and a bit frail, she's not a threat to anyone. Or is she...? Ethel runs a boarding house for government agents, and when someone murders one of her boarders, she springs into action—much to the surprise of her distant cousin Jesse, who has recently come to stay with her while he attends university.

Russell Mullins has left intelligence work. When his wife died of cancer, Rusty quit the Secret Service to repurpose his life. He joins a private protection company in Washington, DC, and is assigned to guard Paul Luguire, a Federal Reserve executive and chief liaison with the US Treasury. Mullins and Luguire form a strong friendship. So when a police detective calls in the middle of the night with word of Luguire’s suicide, Mullins doesn’t buy it.

His doubts are reinforced by Amanda Church, a former Secret Service colleague now in the Federal Reserve’s cybersecurity unit. She uncovered a suspicious financial transaction initiated by Luguire only days before his death.

Set in the wilds of Maine, this is an explosive tale of an estranged son thrust into the hunt for a murderous fugitive - his own father. Game warden Mike Bowditch returns home one evening to find an alarming voice from the past on his answering machine: his father, Jack, a hard-drinking womanizer who makes his living poaching illegal game. An even more frightening call comes the next morning from the police: They are searching for the man who killed a beloved local cop the night before - and his father is their prime suspect.

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.

A woman is found naked, badly beaten and barely alive in the New Mexico mountains. The shocking discovery plunges Albuquerque Detective Alyssa Wyatt into a case that will test her to the limit. It appears that Callie McCormick is the latest plaything of a shadowy psychopath that leaves a long shadow on the streets of New Mexico - an individual linked to a string of deaths but leaving no evidence. But when Alyssa makes a breakthrough that just might reveal the killer, she unknowingly puts herself in the crosshairs of a brutal maniac - one with an old score to settle.

Twenty years ago Emily Mills's father was murdered, and she found his body hanging in the backyard. Her younger sister, Madison, claims she was asleep in her room. Her older sister, Tara, claims she was out with friends. The tragedy drove their mother to suicide and Tara to leave town forever. The killer was caught. The case closed. Ever since, Emily and Madison have tried to forget what happened that night - until an eerily similar murder brings it all back.

Summer 1980: Despite the local superstition that the Bendy Man haunts the woods, three girls go into a Minnesota forest. Only one comes out, dead silent, her memory gone. The mystery of the Taken Ones captures the nation. Summer 2022: Cold case detective Van Reed and forensic scientist Harry Steinbeck are assigned a disturbing homicide—a woman buried alive, clutching a heart charm necklace belonging to one of the vanished girls. Van follows her gut. Harry trusts in facts. They’re both desperate to catch a killer before he kills again.

Parker DuPont is a family man, with a wife, three children, and sister. As happens to many men Parker’s age, he faces the mid-life thing, and decides he wants to hang his own shingle, rather than spend the next 20-plus years as a St. Petersburg police detective. Private investigator sounds very appealing, and so off he goes into the private world to become his own boss. Welcome to his world.

They called him Leonardo - a master skilled in the art of murder. One year ago, Cincinnati was his canvas. A scalpel was his tool. And women were his works-in-progress. FBI profiler Casey McKinley was one of them, a victim of Leonardo's twisted genius. She has the scars - and the nightmares - to prove it. For Casey, a new city means a life far from the one she left behind in Cincinnati. In San Francisco she finally feels safe. Until a series of eerily familiar slayings plunges her back into Leonardo's game.

From USA Today best-selling author Audrey J. Cole—the first five books in the Emerald City Thriller series.

When a local girl falls prey to a sadistic serial killer, Nashville homicide lieutenant Taylor Jackson and her lover, FBI profiler Dr. John Baldwin, find themselves in a joint investigation pursuing a vicious murderer. The Southern Strangler is slaughtering his way through the Southeast, leaving a gruesome memento at each crime scene – the prior victim’s severed hand.

After her rescue of nearly 50 kidnapped children made international headlines, Amara Alvarez gets what she's worked for: a transfer to San Antonio's Homicide Division. Reality sets in quickly, though, as her first case, the suspicious death of a teenager at a crowded local water park, brings chaos to her personal life. As the investigation moves forward, and she increases the pressure on the suspects, Amara finds herself under attack by cybercriminals. Her every move is being potentially watched online, and she's forced to resort to unconventional methods to find the killer.

When a deadly bomb goes off during a climate change debate, librarian and event coordinator Jackie Santoro becomes the prime suspect. Her motive, according to Detective Avery Wick: to avenge the suicide of her prominent father, who was accused of crimes by a city councilman attending the event. Though Avery has doubts about Jackie’s guilt, he can’t exonerate her even after an extremist group takes responsibility for the bombing and continues to attack San Antonio’s treasured public spaces.