The House With A Clock in Its Walls by John Bellairs [1980 TRADE PAPERBACK]
The House With A Clock in Its Walls by John Bellairs with pictures by Edward Gorey
FIRST EDITION PAPERBACK  DELL - YEARLING
Rare 6th Paperback printing / 1980.
*Book has damage [.5" inch tears to page tops for the first 10 pages or so.]
Otherwise would be very good.
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 magicians! Lewis is thrilled. At first, watching magic is enough. Then Lewis experiments with magic himself and unknowingly resurrects the former owner of the house: a woman named Selenna Izard. It seems that Selenna and her husband built a timepiece into the walls--a clock that could obliterate humankind. And only the Barnavelts can stop it!