Dan Kotler Books in Order

Mysterious stones linked to Thomas Edison, Vietnam, and a corrupt empire send Dan Kotler toward the legend of Atlantis. Solving the riddle may be the only way to stop a modern disaster.

A Celtic tomb in the mountains of Egypt draws Dan Kotler into an impossible historical puzzle. The deeper he follows it, the more dangerous the truth behind the Brass Hall becomes.

A stolen medallion suggests Vikings reached deep into North America and found more than history admits. Dan Kotler becomes the FBI's prime suspect and has to solve the mystery before a terrorist weaponizes it.

A murdered philanthropist leaves behind one clue, Devil's Interval, and Dan Kotler soon finds a buried technology tied to history's greatest minds. If it falls into the wrong hands, billions could pay for it.

A forged Antarctic map hides the trail to a secret so dangerous even Hitler wanted it. Dan Kotler and Roland Denzel race a brilliant crime lord for a weapon no one should control.

The remains of a missing Broadway star are found inside a sealed Mayan tomb, reopening a mystery no one can explain. Dan Kotler must survive deadly traps and stop something dangerous from leaving the temple behind.

A sacred site in Egypt and an ancient bronze sword point toward the possibility of the Otherworld itself. Dan Kotler and Roland Denzel must stop a cult from turning myth into global power.

Dan Kotler uncovers an ancient hidden order that has shaped history from behind the scenes for centuries. When a radical faction moves to tighten its grip, the cost becomes personal as well as global.

Clues hidden since World War II lead Dan Kotler toward a secret vault buried in Arizona's Sonoran Desert. If the wrong people reach its artifacts first, history's darkest obsessions could become a modern catastrophe.

Two professors are abducted, and a mysterious manuscript may be the key to a sealed chamber beneath Manhattan. Dan Kotler must solve a deadly labyrinth of riddles before the hostages run out of time.

The sacred bones of Saint Nicholas are stolen in broad daylight, and Dan Kotler is sent to help recover them. Out of jurisdiction and short on backup, he and Roland Denzel chase relic thieves through a dangerous holiday case.

Dan Kotler's grandfather resurfaces with stolen genetic samples and a plan to resurrect gods and kings of legend. The trail leads to Gobekli Tepe, where family history and forbidden science become the same nightmare.

Dan Kotler is pulled into a hidden conflict that has been gathering force out of sight for years. As old enemies move through history's shadows, he has to uncover the plan before the war fully wakes.

A lost plutonium core thought gone forever resurfaces in the hands of a man bent on revenge. Dan Kotler and Roland Denzel race to stop a nuclear threat before Washington, D.C., becomes the price of buried secrets.

Dan Kotler thinks exploring a newly discovered Templar tunnel might finally count as a vacation. Then armed thieves arrive, and the only way out is through a deadly initiation path built centuries earlier.

A strange rune from a controversial dig in Turkey may explain a senator's disappearance and far more besides. Dan Kotler has to decipher it before ancient knowledge becomes a modern catastrophe.

A murdered climate scientist appears to send a letter years after his death, pulling Dan Kotler and Roland Denzel into a biotech conspiracy. At the center is a secret that could weaponize the weather itself.