William Sleator

Max finds himself in possession of a time travel device which is eagerly sought by two desperate men, the scientist who invented it and the scientist's alter ego from a different timeline.

To end the bad luck that fifteen-year-old Dom and his parents have been experiencing since their arrival in Thailand, Dom and his new friend Lek search for a jade carving that must be returned to its shrine to appease an angry Thai spirit.

When he finds an ancient, egg-shaped object with which he travels back and forth in time, eleven-year-old Tycho grapples with several terrible futures he sees for himself and his family.

When an accidental dunking in toxic waste gives sixteen-year-old Jared the ability to read minds, he discovers horrifying secrets about family members at the summer reunion.

Sixteen-year-old twins Harry and Barry stumble across a gateway to another universe, where a distortion in time and space causes a dramatic change in their competitive relationship.

A boltzmon, remnant of a black hole, materializes in eleven-year-old Chris's bedroom and transports him to a parallel world, where he encounters the bitter woman his overbearing older sister will become, after his death, if he cannot convince her to change.

Set in a dystopian America in the near future, the story tells of the experiences of five 16-year-olds who were living in orphanages who wake up to find themselves in a strange building that has no walls, no ceiling, and no floor: nothing but endless flights of stairs leading in every direction, seemingly infinite, so that it is impossible to get one's bearings or have perspective. On one landing is a basin of running water that serves as a toilet, sink and drinking fountain; on another, a machine with lights that intermittently produces food. The five, thrown together in these bizarre circumstances, must learn to deal with the others' disparate personalities, the lack of privacy and comfort, their clear helplessness, and a machine that only feeds them under gradually more exacting situations.

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.

A dark awakening . . . When her parents give her a gloomy old dollhouse for her birthday instead of the ten speed bike she's expecting, Vicky is disappointed. But she soon becomes fascinated by the small shadowy world and its inhabitants. The hours she spends playing with the dolls is a good way to escape from her parents's arguments. As Vicky's life becomes more troubled, she starts to take out her frustration on the dolls, making their lives as unhappy as hers. Then one day, Vicky wakes up inside the dollhouse, trapped among the monsters she's created. Bewildered, Vicky is sure she's dreaming. Can she find her way out of this nightmare world?

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.

Barney's stuck at a boring after-school job, earning money to repay his parents after their beach house is destroyed in a battle with aliens. Of course, they don't believe that aliens did the damage. No one, in fact, realizes that sixteen-year-old Barney saved the world by outsmarting the visitors at their violent game, Interstellar Pig; no one but the aliens - and for them, the game is far from over. Barney is about to become the unwilling partner of a chatty intestinal parasite; the potential snack of giant, man-eating crabs; and the competitor of a stinger-happy seven-foot wasp woman. Life just got a lot more interesting...

This one-of-a-kind teen romance unfolds in backward time, keeping readers guessing until the final revelation.

Eighteen-year-old Sam falls in with his mother's bizarre scheme to revitalize his younger brother's flagging career as a piano prodigy, and agrees to compose "new works" by a long dead composer and present them to his brother as the dictations of a ghost.