William Sleator

Seventeen-year-old Nick buys a used cell phone only to call his girlfriend, but strange and desperate people keep calling--one of them a denizen of Hell--begging for or demanding his help.

When Laura discovers that the unpopular boy living next door to her has the ability to go into the fourth dimension, she makes the dangerous decision to accompany him on his journeys there.

Five sixteen-year-old orphans of widely varying personality characteristics are involuntarily placed in a house of endless stairs as subjects for a psychological experiment.

When her desperately ill older brother insists that she take him into their mysterious backyard garden, designed by their quantum physicist great uncle, fourteen-year-old Susan discovers that things are not always what they seem.

When fifteen-year-old Doug and his younger sister Colette move with their parents to a forested wilderness area, they encounter some weird creatures whose lives are endangered.

An Indian girl insults the moon and is held prisoner by him until her friend reaches the sky country to rescue her.

Back in print for a new generation! Right away, Danny feels something sinister about his new home, Blackbriar. The residents of the nearby town refuse to speak of it and can barely look him in the eyes, and he has strange dreams of fires and witches before awakening to shrieks of laughter. With help from a friend, he begins to unravel the mysteries of Blackbriar and its frightnening past, through the discovery of an ancient doll and a chilling...