Gemma and Becky are identical twins. But after a plane accident they couldn't be more different. There is a wide variety of different stories in the Full Flight Heroes and Heroines series — something to suit every reader's tastes. The series has a reading age of 7.5–8 with a flexible interest age range of 8–14, so the language is accessible while the stories are well developed and interesting. Themes include: aliens on earth, evil robots, a wartime discovery, a dance competition, time travel and a life-changing accident.