Sixteen-year-old David, finding a strange machine that creates replicas of living organisms, duplicates himself and suffers the horrible consequences when the duplicate turns against him.
When aliens abduct both Leo and his artist friend Tim, Leo tries to determine why these creatures from outer space want particularly to use his friend's talent.
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.
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.
In the attempt to decipher a number of strange events after he moves into an old cottage, an orphaned teenaged boy discovers a group of English folk engaged in devil worship.
