MMA champ-turned-FBI Special Agent and BAU specialist Dakota Steele is as tough as they come—and as brilliant, too, able to crack serial killers that no one else can.

This collection is a bundle of the first four books in the Private Investigator Mason Black crime thriller series. Welcome to San Francisco, where depraved serial killers lurk in the dark.

When a college professor is murdered on his fishing boat, his estranged granddaughter, Maggie, races to uncover the deadly secrets he'd been protecting. Her journey leads her on a breadcrumb trail across the country in a desperate cloak-and-dagger search for her grandfather's final research notes. Maggie soon discovers that there are others joining the chase who have little regard for human life and who will stop at nothing to prevent Maggie from getting to the research first.

When a string of young queer men turn up dead in grisly murders, all signs point to the ex-boyfriend - but what should be an open-and-shut case is fraught with tension when BPD homicide detective Malcolm Khalaji joins up with a partner he never wanted. Rigid, ice-cold, and a stickler for the rules, Seong-Jae Yoon is a watchful presence whose obstinacy and unpredictability constantly remind Malcolm why he prefers to work alone. Seong-Jae may be stunningly attractive, a man who moves like a graceful, lethal bird of prey...but he's as impossible to decipher as this case.

In Knockout (Book 1), repossessing Lamborghinis and other exotic toys from criminals is second-hat for Holly. But finding a dead body—and solving a murder—is not. Luckily, Holly has Lucky by her side—a neglected pit bull she found on the wrong side of a job, who refuses to leave her side—and who, like her, has nowhere to go but up.

Harley, reeling from her being put on leave, from her long-term relationship falling apart, and from her father’s dying, is hardly ready to return to her hometown, to its long-buried secrets, and her tortured past. She spent her life escaping this small town—but, as she settles back in, she wonders: Might she have been wrong all this time? Yet as more bodies surface and as every clue leads to a dead end, Harley, clashing with her new partner, realizes she’s in a race against time.

Gavin Gregory often stares into the abyss - that's his job. An elite profiler at the FBI's Behavioral Analysis Unit, he hunts serial killers for a living. He knows how they behave, how they think, what motivates them. Considered the best at what he does, Gavin goes to investigate when it appears a dormant psychopath has reactivated. The case takes a bizarre turn when psychiatrist Debra Esteves contacts him and says she knows who the enigmatic killer is. It soon becomes apparent that what she means is that she knows what the killer is.

Enter the world of Dale Conley. Don’t forget to buckle up.... The government recruited him. They were looking for the smartest. They got the toughest. Dale Conley’s covert investigations take him deep into the shadows - but he’s never seen anything this dark. In rural Virginia, an entire utopian community vanishes overnight. A mass kidnapping. All that remains is a cryptic message chiseled into a bloody stone.

Haunted by visions of the future, FBI Special Agent Laura Frost must tap her psychic talent to hunt diabolical serial killers—while keeping it secret from everyone around her. But with a ticking clock and lives on the line, might her visions lead her astray?

Down the beach, she can just make out the rusting hulk of the Ferris wheel through the dawn mist. The hairs prickle on her neck as she drags her focus back to the chestnut hair fanned out in the shallow water at her feet, to the grains of sand decorating the beautiful girl’s white cheeks like freckles.  

Another day. Another death. Death du Jour. My God, how many such days would there be?'On a bitterly cold march night in Montreal, forensic anthropologiest Dr Temperance Brennan is exhuming the remains of a nun proposed for sainthood in the grounds of an old church.Just hours later, Tempe is called to the scene of an horrific arson. A young family has perished, and there seems to be no witness, no motive, no explanation.

Lei has overcome a scarred past to make a life for herself as a cop in the sleepy Big Island town of Hilo. On a routine patrol she finds two murdered teenagers - one of whom she'd recently busted. With its echoes of her own past, the murdered girl's harsh life and tragic death affect Lei deeply. She becomes obsessed - even as the killer is drawn to Lei's intensity, feeding off her vulnerabilities and toying with her sanity.

Alexa Chase, 34, a brilliant profiler in the FBI’s Behavioral Analysis Unit, was too good at her job. Haunted by all the serial killers she caught, she left a stunning career behind to join the US Marshals. As a Deputy Marshal, Alexa—fit, and as tough as she is brilliant—could immerse herself in a simple career of hunting down fugitives and bringing them to justice.

Dr. Morton Handler practiced a strange brand of psychiatry. Among his specialties were fraud, extortion, and sexual manipulation. Handler paid for his sins when he was brutally murdered in his luxurious Pacific Palisades apartment. The police have no leads, but they do have one possible witness: seven-year-old Melody Quinn.

Shane Ryan knows all about pain and suffering. A retired Marine gunnery sergeant, Shane has seen the worst humanity has to offer. He survived his ordeal, but his soul has been tainted by the darkness, leaving him with a permanent connection to the world of the supernatural. Shane sees the spirits of the dead. He hears their whispered cries of pain. And it’s a gift he plans to put to good use, when he travels to Detroit to investigate the death of one woman who saw through all the darkness in his heart. A woman who became his lover, many years ago.