The Crystal Snare
By: Richard Dungworth
Genre: Children books Age 9-12, Science fiction
Description: Join the Doctor and Martha on their travels through time and space and influence the story with your decisions. Choose a direction and let the adventures begin... People from all over the world were amazed at the exhibits on display at the Great Exhibition - and they didn't even see the alien visitors! Help the Doctor and Martha put a stop to the aliens' plans, before they wreak havoc on humankind...