The series ELI Readers - White Readers is adressed to students between the ages of 11 and 15. Carefully graded by level, from elementary to intermediate, the series contains different types of narration, from puzzle solving to teen fiction and role-play. Each volume contains games and activities. In Search of a Missing Friend + CD audio Puzzle Solving 11-13 years of age (Elementary level) Wills, a clever inventor, has been kidnapped. The twins Harry and Camilla go searching for him. A fun-filled story which lets students learn and memorise vocabulary in an enjoyable way. Activities and various multidisciplinary, linguistic and logistic games make learning basic English a global, lively experience.