Lazarus Long travels through a series of times and worlds, refusing to stop living and eventually becoming his own ancestor, in this novel about the philosophy of love.

Fourteen-year-old Bobby Pendragon, apprentice to his Uncle Press, a Traveler responsible for solving interdimensional conflict, tries to locate the legendary lost land of Faar which may hold the key to the survival of the water-covered territory of Cloral, which stands on the brink of war.

Fourteen-year-old Bobby Pendragon and Spader from the planet Cloral journey back in time to 1937 New York City to uncover a plot by the evil Saint Dane.

Fourteen-year-old Bobby Pendragon, having learned he is a Traveler--someone who can ride "flumes" through time and space, is soon off to the alternative dimension of Denduron where he teams up with Loor, a girl his age from the warrior-territory of Zadaa, in an attempt to save the gentle Milago people from slavery.

Pineapple Place, an invisible street that moves from city to city and keeps its inhabitants the same age forever, is threatened with change when nine-year-old Jeremiah becomes bored and makes contact with the outside world.

A group of children and a "spirit" go back through time to discover the beginnings of Halloween.

In 1913 young Indiana Jones finds an ancient silver ring that may have belonged to King Arthur, investigates sabotage of a Welsh friend's coal mines, and travels back in time to solve a crisis in the present.

Two twelve-year-old girls in San Antonio, Texas, Ada in 1891 and Amber in 1991, switch places through a magic well and try desperately to return to their own times.

When his spaceship crashes to earth, a highly advanced alien interferes with the lives of two teenagers living on the island of Manhattan during different centuries.

When he goes to spend the summer with his great-aunt in the family's old house, eleven-year-old Drew is drawn eighty years into the past to trade places with his great-great-uncle who is dying of diphtheria.