The point if this book is to basically explain how you never know where life is going to take you. One minute you think you're on the right track and then the next moment your life is taking a turn for the worse. This is what Linus and all the others are experiencing. one day they are living their everyday life and just minutes later they are being lured by a man they never met.
Life sometimes takes a turn for the worse and you have to deal with it. The characters in the book do not know how to cope with it. In reality who would be able to cope with being abducted. they have no family anymore. The Bunker just contains them six. they are all each other have. How could one man be so evil and desperate to take humans away from what they have going for them. Life is like one crazy roller coaster but on this ride you don't know what is going to come next and you don't know how you're going to react. Anja one the characters is going through it the worst and she is not making it any better for her or the people around her. Linus is actually trying to make things comfortable for everyone living there. These characters probably would of never thought his would actually happen to them. what are the chances of being abducted. A seventy year old man being abducted. This just might all be a sham for their money.
Kevin Brooks, the author of this book got his inspiration to write child thrillers by his own fascination of reading adult thrillers. His stories don't relate to his life but they do have an impact on his life because this is what kind of stories he enjoys writing.