Meet Gideon Crew in the first novel in a high-octane new thriller series from the NEW YORK TIMES bestselling authors.

Devastated by the discovery that his wife, Helen, was murdered, Special Agent Pendergast must have retribution. As he stalks his wife's betrayers, from Scotland to New York and Louisiana, he is forced to dig further into Helen's past. He is stunned to learn that Helen may have been a collaborator in her own murder.

'Before you embark on a journey of revenge, first dig two graves' Confucius In the 91 hours following the brutal kidnapping of his wife, FBI agent Pendergast does everything in his power to find her. But it's too late. And a shattered Pendergast retreats to his New York home where he shuts the world out. Then a string of bizarre murders erupt in Manhattan's hotels, and Pendergast realises they're a deadly message from the kidnappers. Filled anew with vengeful fury, he tracks them to the dark forests of South America, where he is faced with an old evil that threatens the world as we know it...

NASA is building a probe to be splashed down in the Kraken Mare, the largest sea on Saturn's great moon, Titan. It is one of the most promising habitats for extraterrestrial life in the solar system, but the surface is unstable and dangerous, requiring the probe to be outfitted with artificial intelligence software. Melissa Shepherd, a brilliant programmer, has developed 'Dorothy', a powerful, self-modifying AI whose potential is both revolutionary and terrifying. When miscalculations lead to a catastrophe during testing, Dorothy flees into the internet. Former CIA agent Wyman Ford is tapped...

A five-hundred-year-old legend. An ancient curse. A medical mystery. A journey into the unknown heart of the world's densest jungle and a stunning archaeological discovery.