Readers of all ages will be astonished and stumped by these interactive mysteries. In brief paragraphs and black-and-white illustrations, award-winning author Sandy Silverthorne and John Warner present 100 puzzles, each with a logical "aha" answer...that may require thinking outside the box. Clues and answers are included in separate sections.Rex is surprised when the phone rings. He answers it and writes down a message. He doesn't know the person who called or the person being called. He will never meet them. What is going on?" "Clue: " Rex was workingClue: "He was in a public placeClue: "It wasn't his personal phone "Answer: " Rex works for the phone company. He'd just finished repairing a pay phone and it rang. The caller explained her friend was supposed to be there. Rex wrote down the message and left it for the friend to find. Hours of wholesome entertainment is practically guaranteed!