Key, Alexander

An orphaned brother and sister, possessors of unusual powers, run away to the mountains where they are accused of witchcraft.

A medieval boy and girl transport themselves 1000 years through time into modern New York City to find a magic sword.

Tony and Tia must protect their supernatural powers from greedy Letha and her power-hungry scientist friend who want to exploit their mysterious abilities.

After falling through a forgotten door and ending up on the strange planet Earth, Jon is befriended by a family and soon realizes his presence has put their lives in danger and he must find the secret passage quickly or he may never get home.