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.

Connect with Alan


Connect with Alan Jacobson on Facebook
Ask Alan questions, tell him what you’d like to see in future books, get inside information on what’s to come, enter contests to win–and much, much more!

Follow Alan on Twitter
Can an author who writes 140,000-word novels write 140-character posts? Find out!

Follow Alan on Instagram
Photos tell a story, too. Follow Alan’s creative eye as he captures moments in time, often when he’s on location researching a future novel, and see alerts for special book promotions.


Free personal safety eBook written by FBI Profiler Mark Safarik and Alan Jacobson when you subscribe to Alan’s newsletter.

Are you in a book group?

Choose an Alan Jacobson novel and get a free Reading Group Guide
Kick start a stimulating discussion

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.

FBI Profiler Mark Safarik & Author Alan Jacobson (Part 3)

FBI Profiler Mark Safarik & Author Alan Jacobson (Part 3)

In part three, Mark and Alan talk personal safety—and how to get their free eBook on staying safe. Mark then slips on his FBI hat...and Agent Safarik talks profiling—behavioral crime analysis—what it is, how it works, and what it is not. He dispels some...

read more
FBI Profiler Mark Safarik & Author Alan Jacobson (Part 4)

FBI Profiler Mark Safarik & Author Alan Jacobson (Part 4)

In part four of the interview between FBI Profiler Mark Safarik and Author Alan Jacobson, Mark talks about what it's like sitting across the table from a serial killer. He also explains his work with the Vidocq Society and Forensic Behavioral Services International....

read more
Killer Instinct – Mark Safarik’s TV series

Killer Instinct – Mark Safarik’s TV series

This is the trailer for season one of Mark Safarik's riveting TV series, Killer Instinct, which aired on NBC's Cloo network and Biography Channel. It's also available on iTunes. ***** click on image to view video ***** Check out Alan's other book trailers and author...

read more
Fox6 News San Diego: The Hunted

Fox6 News San Diego: The Hunted

USA Today bestselling author ALAN JACOBSON appears on San Diego’s Fox6 News to discuss THE HUNTED, his second novel and the first in the OPSIG Team Black series.

read more

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

Pin It on Pinterest