Margins
CORE Shadow Trilogy book cover 1
CORE Shadow Trilogy book cover 2
CORE Shadow Trilogy book cover 3
CORE Shadow Trilogy
Series · 3 books · 2013

Books in series

Shadow of Danger book cover
#1

Shadow of Danger

2013

Beware of what lurks in the shadows... Four women have been found dead in the outskirts of a small Wisconsin town. The only witness, clairvoyant Celeste Risinski, observes these brutal murders through violent nightmares and hellish visions. The local sheriff, who believes in Celeste’s abilities and wants to rid their peaceful community of a killer, enlists the help of an old friend, Ian Scott, owner of a private criminal investigation agency, CORE. Because of Ian’s dark history with Celeste’s family, a history she knows nothing about, he sends his top criminalist, former FBI agent John Kain to investigate. John doesn’t believe in Celeste’s mystic hocus-pocus, or in her visions of the murders. But just when he’s certain they’ve solved the crimes, with the use of science and evidence, more dead bodies are discovered. Could this somehow be the work of the same killer or were they dealing with a copycat? To catch a vicious murderer, the skeptical criminalist reluctantly turns to the sensual psychic for help. Yet with each step closer to finding the killer, John finds himself one step closer to losing his heart.
Shadow of Perception book cover
#2

Shadow of Perception

2013

What happens when negligent plastic surgeons get a taste of their own medicine…? Chicago investigative reporter, Eden Risk, receives an unmarked envelope containing a postcard ordering her to watch the enclosed DVD…or someone else dies. No police. After Eden watches the DVD, a gruesome, horrifying surgery, she turns to the private criminal investigation agency, CORE, for help. Only she hadn’t expected that help to come with a catch. Her former lover, Hudson Patterson, has been assigned to the case. Hudson would rather have another CORE agent handle the investigation. Two years ago, he’d screwed things up with Eden…bad. And as more DVDs arrive, Eden and Hudson find themselves not only knee-deep in a twisted investigation, but forced to deal with their past, and the love they’d tried to deny.
Shadow of Vengeance book cover
#3

Shadow of Vengeance

2013

Welcome to Hell Week. You have seven days to find him… At Wexman University, male students will do anything to get into a top fraternity. They’ll prove their worth during Hell Week by participating in various physical, psychological and even juvenile pranks. But those shenanigans aren’t so funny when pledges start disappearing. What kind of evil has stalked this small Michigan university for the past two decades? Theories range from obscene scientific experiments to grotesque satanic killings…but they’re all wrong. The murdered boys serve a single purpose…the ultimate revenge. Rachel Davis, forensic computer analyst for the private investigation agency CORE, has been itching to leave her desk behind and work in the field. When her brother Sean, a student at Wexman, is found beaten and his roommate kidnapped during Hell Week, she gets her chance. Only her boss insists former U.S. Secret Service Agent, Owen Malcolm, helps her with the investigation. Owen is the last person she wants on this assignment. She’d been secretly half in love with him for over four years, until the night he’d crushed her ego and destroyed her hopes for any kind of future with him. For his own reasons, Owen refuses to risk becoming involved with a coworker. Now that he and Rachel are stuck working side-by-side to solve this perverse investigation, he’s having a hard time fighting his attraction to her…an attraction he’s tried to deny from the moment they met. But time is ticking. They have seven days to find the missing pledge and catch a killer. Seven days before the body count rises and the pledge ends up another victim of Hell Week.

Author

Kristine Mason
Kristine Mason
Author · 27 books

Kristine Mason is the bestselling author of the popular romantic suspense trilogies, C.O.R.E. Shadow and Ultimate C.O.R.E. She is currently working on her next series, C.O.R.E. Above the Law, along with more Psychic C.O.R.E. novels. Although Kristine has published a few contemporary romance novels, she focuses most of her energy on her romantic suspense stories, which she loves for their blend of dark mystery/suspense and sexy romance. She is fascinated with what makes people afraid, and is famous for her depraved villains whose crimes present massive obstacles for her heroes and heroines to overcome. Kristine has a degree in journalism from Ohio State University and lives in Northeast Ohio with her husband, four kids, and two dogs. If she’s not writing, she’s chauffeuring kids, gardening, or collecting gnomes. Oh, and she makes a mean chocolate chip cookie! Connect with Kristine on Facebook, Twitter or Goodreads. Or sign up for her newsletter at www.kristinemason.net.

548 Market St PMB 65688, San Francisco California 94104-5401 USA
© 2025 Paratext Inc. All rights reserved