The Sleeper's War - Dan Kotler, #10

An ancient drug will determine humanity's future.

Book 10 of the Dan Kotler archaeological thrillers 

Makry ypno—the "Long Sleep"—a mysterious plant lost to history for millennia and mentioned only in obscure Greek medical texts, may hold the key to humanity's survival. If cultivated successfully, it could enable deep-space travel and help mankind escape looming global catastrophes by reaching for the stars. But powerful forces want it for themselves.

When an archaeobiologist is brutally murdered, Dr. Dan Kotler—brilliant anthropologist and FBI consultant—teams up once again with his partner, Agent Roland Denzel, to investigate. 

Their trail leads deep into the Mojave Desert, where evidence suggests the plant may still exist and may have once been used by Native Americans in the region.

Kotler and Denzel soon discover they are not alone in the hunt. A ruthless team of mercenaries, led by a dangerous enemy from Kotler's past, has already found the makry ypno—and they are willing to kill anyone who stands in their way to keep its extraordinary power under their exclusive control.

"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