The first book left off with the kidnapping of Mrs. King. In Watcher in the Woods, the King Family commences their search for her, quickly realizing that they must learn more about the worlds behind the mysterious doors and have a well thought out plan before they just jump to the task. Unfortunately, they must also pretend everything is normal at home and go about their daily lives to avoid attracting unwanted attention. When a stranger appears and tries to force them to sell the house, their desperation to find Mrs. King is doubled. This second book was just as good as the first. Full of suspense and of course ending in a really exciting cliffhanger, I am looking forward to reading the third one.