The Darkness of Evil | Karen Vail Novel Series #7 | A Book by Alan Jacobson

Dark Side of the Moon

Now Available

In 1972, Apollo 17 returned with 200 lbs of rock—and something far more dangerous than they could’ve imagined. For decades the US military kept the discovery secret…until now. Dark Side of the Moon is the latest award-winning, critically acclaimed OPSIG Team Black novel from USA Today bestselling author Alan Jacobson featuring covert operatives Hector DeSantos, Aaron Uziel—and FBI profiler Karen Vail—on a mission unlike any they’ve undertaken before…

Karen Vail Series

Karen Vail is no ordinary FBI agent.

She’s a profiler, brought to life by Alan Jacobson’s seven years of unprecedented access to, and research with, the FBI’s Behavioral Analysis Unit. The Karen Vail series has been raved about by reviewers, readers, law enforcement officers of all stripes, real FBI profilers…and even one of the legendary founding fathers of the Behavioral Analysis Unit in Quantico.

Karen Vail Novel Series | Karen Vail is no ordinary FBI agent. | Novels by Alan Jacobson

OPSIG Team Black Series Novels

America’s safety is on the line!

Missions the United States government cannot sanction–or acknowledge–fall under the purview of OPSIG, the Operations Support Intelligence Group, run out of a secret office in the basement of the Pentagon.

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Alan Jacobson

Meet Alan Jacobson

I’m often fascinated by how and why things happen—and how chance meetings and random occurrences, years later, can have an enormous impact on one’s life. There are many such examples to choose from, but I’ll share two with you because of the impact they had on my writing career.

No Way Out trailer

FBI Profiler Karen Vail returns in her fifth adventure, No Way Out, a high-stakes thriller set in England. Join Alan on location in London as he brings Karen Vail to your doorstep and touches on some of the problems Vail faces assimilating to the British culture—and the off-limits places Alan visited during the course of his research.

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The 7th Victim trailer

Alan gives us insight into the mind of Karen Vail, the baggage she must deal with, and the challenges she faces with the Dead Eyes killer.

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Crush trailer

​Karen Vail returns in Crush, which brings the esteemed profiler to the Napa Valley. Join Alan as he introduces us to the second Vail installment while on location where the novel takes place: the Napa County Sheriff’s Department, the county morgue, the wineries that appear in Crush—and the wine cave where one of the victims is found…

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Inmate 1577 trailer

Watch the book trailer for Inmate 1577, the fourth novel in the Karen Vail series, featuring photos and videos from Alcatraz and San Francisco. ***** click on image to view video ***** Check out Alan's other book trailers and author interviews, including four with FBI...

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Author Magazine interview

Alan sat down with Author Magazine in Seattle after the launch of The 7th Victim. In this interview, he provides tips for aspiring writers, some background on his writing method, and the creative process. Check out Alan's other book trailers and author interviews,...

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FBI Profiler Mark Safarik & Author Alan Jacobson (Part 2)

FBI profiler Mark Safarik interviews Alan Jacobson about the Karen Vail novels, where the idea behind the Crush killer came from, the research he did with the "real" Karen Vail, SSA Mary Ellen O'Toole, and more. Watch part two below: Watch part three of the Mark...

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Recent Books by Alan Jacobson


The Darkness of Evil | A new novel by Alan Jacobson

The Darkness of Evil (Karen Vail #7)

The latest jaw-dropping thriller from USA Today bestselling author Alan Jacobson, featuring esteemed FBI profiler Karen Vail, on the hunt for an escaped serial killer …

Spectrum, a book by Alan Jacobson

Spectrum (Karen Vail #6)

Authoritative, compelling and crisp, Spectrum moves with a velocity that seems to make the pages turn themselves.

The Lost Codex | A novel by Alan Jacobson

The Lost Codex (OPSIG Team Black #3)

From the first page, you know you’re in the hands of a storyteller at the top of his game: The Lost Codex has nonstop action, living-breathing characters, rich detail …”

No Way Out | A novel by Alan Jacobson

No Way Out (Karen Vail #5)

“Jacobson mixes rocket-paced suspense with fascinating history in this thrill ride of a book.”

Hard Target | A novel by Alan Jacobson

Hard Target (OPSIG Team Black #2)

An enigmatic covert operative. A skilled FBI agent with a dark past. And a terror plot unlike any in history.

Innmate 1577 | A Novel by ALan Jacobson

Inmate 1577 (Karen Vail #4)

“Inmate 1577 is another rippin’ good ‘Alan Jacobson read’! Jacobson researches his books like a good newspaper reporter, and then pushes the envelope …”

Stand alone thrillers and short stories

False Accusations | A stand alone thriller by Alan Jacobson

False Accusations

“Alan Jacobson has crafted a riveting story with a truly frightening villainess. This is a terrific book!”
John Saul, New York Times bestselling author

Double Take | A stand alone Short Story by Alan Jacobson

Double Take

“Alan Jacobson writes with a sure hand, a strong voice, and a fine eye for detail.”
– Ridley Pearson, New York Times bestselling author

Fatal Twist | A stand alone Short Story by Alan Jacobson

Fatal Twist

“Karen Vail is a knockout, tough and brilliant.”
– Tess Gerritsen, New York Times bestselling author & creator of Rizzolli & Isles TV series

Our Blog


Naming characters

Choosing the proper names for my characters is something I have focused on my entire career--which now spans more than two decades. I remember reading books early on where the character names were so close to one another that I got mixed up who was who. As a result,...

The Climax, Alan Jacobson-style

Both readers and authors know how important the beginning of a book is: if it doesn’t grab you right away, there are other things you could be spending your time doing. Conversely, the ending is the last impression that you leave the reader with, so obviously that’s...

Fidelity. Bravery. Integrity. FBI.

As part of the ongoing research for my new book, I spent a few hours last week meeting with the Special Agent in Charge at one of the FBI’s busiest, and largest, field divisions in the country. And although I’ve been working closely with the Bureau for almost a...

Government waste is not a partisan issue

I saw an article yesterday about Vice President Pence flying cross-country on Air Force Two to attend the San Francisco 49ers game. Only he left during the national anthem--before the game began. And he told his secret service detail to keep the cars where they were...

Evil Exposed

The Darkness of Evil: what happens when a daughter discovers her dad is a serial killer? A couple of years ago I started wondering what it would be like for a daughter to discover that her father is a heinous murderer of women. What would she feel? Denial? Or a sudden...

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