Rollins, James

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.

Sigma Force director Painter Crowe sets out on a dark path to revenge after a bloody massacre at a Native American sweat lodge holds a personal message for him and uncovers a shocking secret about the founding of America.

Commander Gray Pierce and his Sigma Force operatives investigate the murders of three individuals in different countries whose bodies were marked with a Druidic pagan cross and connect the crimes to an ancient artifact which can threaten the existence of mankind if it falls into the wrong hands.

Years after armed men loot the city zoo in Baghdad, Lorna Polk, a Louisiana state veterinarian, discovers strangely deformed animals with a heightened intelligence in the cargo of a shipwrecked fishing trawler and must track down the one that got free, but she will need help from a man from her past, U.S. Border Patrol agent Jack Menard.

Sigma Force leader Commander Gray Pierce uncovers a Russian project to bioengineer autistic children in hopes of creating a savant who can help them dominate the world and, in order to stop it, he must find the link between the dangerous plot and the Oracle of Delphi.

Daring adventurer-archaeologist Indiana Jones returns in an all new, action-packed saga, in the novelization of the fourth, long-anticipated Indiana Jones movie.

From the depths of the Indian Ocean, a horrific plague has arisen to devastate humankind. But it is merely a harbinger of the doom that is to follow. Aboard a cruise liner transformed into a makeshift hospital, Dr. Lisa Cummings and Monk Kokkalis, operatives of SIGMA Force, search for answers to the bizarre affliction. But there are others with far less altruistic intentions. In a savage and sudden coup, terrorists hijack the vessel, turning a mercy ship into a floating bio-weapons lab. A world away, SIGMA's Commander Gray Pierce thwarts the murderous schemes of a beautiful would-be killer who holds the first clue to the discovery of a possible cure, then joins forces with the woman who wanted him dead. As a relentless madman dogs their every step, Gray and his unlikely ally are pulled into an astonishing mystery buried deep in antiquity and in humanity's genetic code.--From publisher description.

The elite scientists of Sigma Force race to crack the ultimate mystery of mankind in a quest that will save or destroy the human race.

During a service at a German cathedral, a band of armed intruders disguised as monks gun down the worshippers and clergy and escape with a priceless treasure that could reshape the world.

Curator Safia al-Maaz and her friend and museum benefactor Lady Kara Kensington, team up with archaeologist Omaha Dunn and government operative Painter Crowe on a perilous expedition to the Arabian desert in search of the lost city of Ubar and the source of the antimatter used to destroy the antiquities branch of a London museum.