A teenage boy wakes up lying on the hot cobbles of a Toledo street. With no memory of who he is, nor why he is in Spain, he sets out on a quest to discover his own identity and purpose. Following a trail of tantalising clues through the picturesque backstreets of Toledo, he meets a cast of colourful characters, from the charming Valentina and the mysterious Hassan, to the menacing and elusive Álvaro. In the first part of a four-book series , our protagonist searches for himself, but will he be happy with the person that he finds? Conceived for, and with input from, iGCSE Spanish students, the Extranjeros series brings the iGCSE topic areas to life through an engaging and exciting mystery in one of the most beautiful locations in Spain. Thanks to its parallel texts which guarantee 100 % comprehensible input at all times; the repetition of key language items; the judicious use of cognates and choice of high-frequency vocabulary drawn from the 2,500 most frequent Spanish words, this book is ideal for learners in the A2-B1 proficiency band. For further consolidation we recommend the accompanying activities workbook which provides a wide range of engaging word- and grammar-focused tasks designed to engage the learner at various level of processing of the text, i.e.: spelling, word-/phrase-recognition, grammar, syntax, meaning and discourse building.