When world-famous archaeologist and ex-soldier Max Hunter finds a mysterious artefact in a tomb beneath the Gates of Nineveh, his lifelong dream of finding The Atlantis Covenant comes one step closer. But there is a problem. He is not the only one looking for it and his discovery unleashes a high-speed hunt for the lost civilisation between a mysterious Swiss foundation, the FBI, and the world's most secretive society.

Following a tip-off from a contact in the Dutch Security Service, HARPA Director James Gates tasks his deputy, Amy Fox, to raid a container ship and secure a cache of smuggled biblical relics. Among the haul, they hope to find an enigmatic statue made by John the Apostle and the answer to a riddle about the Apocalypse.

When Max Hunter and the HARPA team are called in to investigate the suspicious theft of a stolen Titanic artefact, they are soon embroiled in a breakneck global chase to track down five ancient relics that promise to lead them to perhaps the greatest treasure they could imagine. From the Austrian Alps to a Spanish monastery and the wreck of the Titanic itself, they engage in a high-octane battle to defeat an old and notorious enemy. But along the way, they also make a new and even deadlier adversary that could spell the end of Team HARPA forever.

When ex-army officer and UNESCO archaeologist Max Hunter is sent to Normandy on the trail of England's missing crown jewels, he thinks he's in for a few easy weeks. But when the ancient Mont Saint-Michel abbey is attacked by gunmen, Hunter and his research assistant Lauren Lane are forced to flee for their lives with a mysterious treasure chest hidden for centuries inside the abbey. After evading the assassins, Hunter and Lauren find something inside the chest with world-changing consequences.

Dr Max Hunter, Special Agent Amy Fox and the rest of the HARPA Team are on the most important mission of their lives to rescue their teammate Quinn Mosley, HARPA Director Jim Gates and his wife Susanna, and Hunter's UNESCO manager Professor Juliette Bonnaire who have all been kidnapped by a mysterious organisation claiming to be the Illuminati. The group's leader, Oriax, says he will trade their friends' lives for the Sword of the Archangel Michael and gives them a 24 hour deadline to meet his demands.

While on official UNESCO business in The Vatican Museum, Dr Max Hunter finds himself pulled into a dark conspiracy of Biblical proportions! Summoned to the inner sanctum of the Vatican in the middle of the night, Hunter discovers his friend and colleague, Professor Marco Vitali, has been brutally murdered, using his dying moments to draw a message on the floor in his own blood – a clue for Max to follow!

When a terrified informant is gunned down in front of HARPA Director Jim Gates, he leaves behind a terrifying revelation: a missing, original chapter from the Book of Exodus has been discovered. Now, Ulrich Faust, the world's richest and most dangerous man, is determined to claim the plague for himself. From the shadowy crypts of Seville to the bustling souks of Marrakech and the mysterious tombs of Egypt, the elite HARPA team must race against the clock. The only thing between him and his apocalyptic plan is archaeologist Max Hunter, Special Agent Amy Fox, and rest of the elite HARPA team.