When Lewis Barnavelt, an orphan, comes to stay with his uncle Jonathan, he expects to meet an ordinary person. But he is wrong. Uncle Jonathan and his next-door neighbor, Mrs. Zimmermann, are both witches! When Lewis experiments with magic himself he unknowingly resurrects the former owner of the house: a woman named Serenna. It seems that Serenna built a timepiece into the walls- a clock that could obliterate humankind... 12+ Soon to be a major motion picture starring Cate Blanchet.