The Devil's Interval

The next sound you hear could change everything forever.

Book Three of the Dan Kotler Archaeological Thrillers

A forbidden technology, buried for centuries, is about to enslave humanity.

When rock-star-turned-philanthropist Ashton Mink is brutally murdered in his Manhattan penthouse, his final words are a single cryptic clue: "Devil's Interval."

Dr. Dan Kotler, archaeologist and consultant to the FBI's Historic Crimes task force, joins Agent Roland Denzel at the scene. What they uncover is far more dangerous than a simple murder.

A secret project—built on the suppressed research of history's greatest minds, including Sir Isaac Newton—has resurfaced. 

The Devil's Interval is a weaponized technology so terrifying it was deliberately hidden twice in human history. 

Now it's back, and whoever controls it could rewrite the future of civilization.

With help from NYPD Detective Peter Holden, Kotler and Denzel race to solve Mink's murder, recover the stolen technology, and stop a looming terrorist attack that could threaten billions.

"J. Kevin Tumlinson's thrillers are a throat-clutching ride. If you love historical mysteries crafted with action and adventure, don't miss [Tumlinson's books]!"
— James Rollins, #1 New York Times Bestseller of Arkangel

"With the pacing of a blockbuster and the depth of literary fiction, Kevin Tumlinson crafts stories that are both intellectually engaging and impossible to put down—prepare to lose sleep."
— J.D. Barker, New York Times Bestselling Author

"Where [Tumlinson's work] excels most is its cross-genre appeal. All of these disparate elements shouldn't work together, but they do, and a big reason is that this novel is just so damn fun."
— Jeff Daugherty, BookTrib