Connecticut middle-schooler Jake and his older sister Kady are transported by a Mayan artifact to a strange world inhabited by a mix of people from long-lost civilizations who are threatened by prehistoric creatures and an evil alchemist, the Skull King.

Super-spy Paul Chavasse – one of Jack Higgins's most extraordinary heroes – embarks on a mission to Albania, only to find himself at the centre of a deadly double-cross, fighting for his life. It's a trip that agent Paul Chavasse will never forget. His destination: the isolated republic of Albania on the Adriatic coast, at a time when the regime is at its most repressive and the people live in daily fear of the ruthless secret police. His job:...

Entrusted with her husband's discovery of extraterrestrial life, and enlisted by her dead husband's friend, anthropologist Pierre Saad, to help him smuggle a newly discovered artifact out of Egypt -- an ancient codex concerning the human authorship of the Book of Genesis -- Lucy Bergmann crash lands her plane on a slip of verdant land between the Tigris and Euphrates rivers in the Middle East. Burned in the crash landing, she is rescued by Adam, a...

A young archivist working in the National Archives and his childhood crush accidentally happen upon a priceless artifact--a 200-year-old dictionary that once belonged to George Washington--hidden inside a desk chair. Eager to discover why the President is hiding this important national treasure, the two soon find themselves entangled in a web of deception, conspiracy, and murder that will reveal the most well kept secret of the U.S. Presidency.

Archaeologist Dilara Kenner and former combat engineer Tyler Locke realize that they have just seven days to find the remains of Noah's Ark before shadowy agents use its secret to wipe out civilization.

Sixteen-year-old Riley copes with the loss of her mother two years earlier with the help of a support group, which gets involved in a mystery surrounding a relic of St. Ignatius.

During a crowded service at a cathedral in Germany, armed intruders in monks' robes unleash a nightmare of blood and destruction. But the killers have not come for gold; they seek a more valuable prize: the bones of the Magi who once paid homage to a newborn savior... a treasure that could reshape the world. With the Vatican in turmoil, SIGMA Force leaps into action. An elite team of scientific and Special Forces operatives under the command of Grayson...