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.

Meet Detective Maddie Ives in this absolutely gripping, race-against-time series opener from best-selling author Charlie Gallagher. A young woman’s body is left in a metal container in a remote location. The killer is careful to position her under a camera that links to his smartphone. He likes to look back at his work. He is watching her. But she isn’t dead. So he will return to finish the job. He can barely contain his excitement at the thought of getting to do it all over again. But he must be careful. He cannot rush. Rushing makes you careless....

Dylan First, a brilliant psychologist, is haunted by the horrific discovery of her past. Her mentor and father figure, a brilliant psychiatrist and professor, was secretly a serial killer. He is behind bars, but with everything Dylan thought she knew turned upside down, she feels lost when the FBI suddenly comes knocking. A new killer is using her mentor’s trademark signature. And they need Dylan to dissect his mind and stop him before it’s too late.

FBI Special Agent Ruby Hunter wants nothing more than to put the 13 killer, and her days in the FBI, behind her, and to try to pick up the pieces of her life. But he refuses to rot quietly. Ruby realizes she must do the thing she dreads the most: Visit him in prison. But he is diabolical and cunning, an expert at toying with his victims—and with her.

Patrick and Clare wake up trapped in a basement, a thin wall separating their cells. Their captor is mysteriously absent, which at first seems like a blessing. As more time passes with no food or water, they begin to realize a clock is ticking for their survival. Combining their intelligence and determination, the two begin plotting an escape from their shared prison. Overcoming each obstacle only presents another obstacle standing in the way of their freedom. It will take all of their ingenuity and strength to find their way out of this mess.

In No Mercy (Book 1), when a serial killer escapes from a mental hospital, the FBI creates an elite unit to target criminally-insane killers. FBI Special Agent Valerie Law, a rising star, is the perfect candidate—but for Valerie, this case may just hit too close to home. With an insane killer on a spree, the clock is ticking for Valerie and her partner—and the brilliant psychiatrist on their team—to enter his mind and stop him before he strikes again.

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?

FBI Agent Tara Mills is young, brilliant and new to the force. With a promising career in front of her, she faces the ultimate test when she is assigned the case. It soon proves to be more challenging than she ever could have imagined – an impossible riddle that leaves even her seasoned partner stumped.

A man in hiding. A gang of outlaws searching for retribution. This is no time for cupcakes. Today is Brody Steele’s first day as the new owner of The Red Herring, Pleasant Valley, Maine’s only mystery bookstore. The cute shop has a loyal customer base as well as an ornery cat. Unfortunately, Brody doesn’t know the first thing about running a legitimate business, he doesn’t want to be in the small town, and he hates cats. On top of all that, he hasn’t read a book since high school. When a cute woman walks into the store, he thinks his bad luck is about to change.

It starts with the hanging woman in the Maple Valley woods; the woman with no shoes, no car and no name. On paper it’s an obvious case of suicide - but to Officer Dean Matheson, something doesn’t add up. Then there are the other deaths, deaths that also look like suicides - but are they? The victims are all women living on the fringes of society, addicts and criminals. Who will miss them? Does anyone really care if they die? Dean Matheson is making it his business to care, even if it means he becomes a target....

In this new series by number one best-selling—and critically-acclaimed—mystery and suspense author Kate Bold, Camille Grace, a rising star in the FBI’s BAU unit, is dispatched to the one place she vowed to never return: the deep South.

There are people in Edgewater, Oregon, who think that twenty years ago, Rachel Gaston got away with murder. But Rachel still has no idea how a foolish teenaged game turned deadly - or who replaced her soft pellet air gun with a real weapon. When a figure jumped out at her from the darkness, she fired without thinking. By the time she recognized her half-brother, Luke, it was too late.

Leigh's life has been ripped apart. Orphaned, she goes to live with incredibly wealthy relatives she never knew she had. Struggling to fit into her new world, she can't let go of her grief. When the police tell her the investigation into her parents' murder has hit a brick wall, she knows the only way she will ever know peace is to solve the mystery herself. With new family and friends, which includes a ghost with multiple personality issues, Leigh risks everything to find her answers.

FBI Special Agent Maya Gray, 39, has seen it all. She’s one of BAU’s rising stars and the go-to agent for hard-to-crack serial cases. When she receives a handwritten postcard promising to release 12 kidnapped women if she will solve 12 cold cases, she assumes it’s a hoax.

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.