"The Navajo called them the Anasazi: an enigmatic race of southwestern cliff dwellers. For centuries, the sudden disappearance of this proud and noble people has baffled historians. Summoned to a dark desert plateau by a desperate letter form an old friend, renowned investigator Mike Raglan is drawn into a world of mystery, violence, and explosive revelations. Crossing the border beyond the laws of man and nature, he will learn the astonishing legacy...

Dana, a modern black woman, is celebrating her twenty-sixth birthday with her new husband when she is snatched abruptly from her home in California and transported to the antebellum South. Rufus, the white son of a plantation owner, is drowning, and Dana has been summoned across the years to save him. After this first summons, Dana is drawn back, again and again, to the plantation to protect Rufus and ensure that he will grow to manhood and father...

T., a thirteen-year-old math prodigy, is summoned to the Smithsonian on Good Friday 1939, where scientists are working furiously to develop the atomic bomb, and discovers that he holds the key to both the secrets of nuclear fission and time travel.

Alice and Ike are trying to launch a record label when their star talent, Del, disappears. Their only clue to her whereabouts is a strange story about a group of orphans who vanished in the 1930s which leads them to a tent in the wilderness of Virginia, that seems to be a portal to another world.