The Templar Tunnel. Dan Kotler

Some tests are life or death. The Fourth Dan Kotler NovellaArchaeologist and occasional FBI consultant Dr. Dan Kotler-self-proclaimed trouble magnet-thought exploring a newly discovered Templar tunnel would be the perfect vacation. He was wrong. When armed thieves seize control of the tunnel in search of its legendary hidden treasure, Kotler is thrust into an ancient rite of passage designed by the Knights Templar a thousand years ago: a deadly network of traps, trials, and secrets.
With no way out except forward, Kotler must rely on every ounce of his archaeological knowledge and quick wit to survive the Templar Initiate's Path. A gripping archaeological thriller and fast-paced Templar adventure for fans of hidden treasure, Knights Templar mysteries, and the Dan Kotler series. Can Kotler survive the Templar Initiate's Path? "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