NANCY'S FAVORITE MYSTERY WRITER NEEDS A DETECTIVE -- TO FIND HIS OWN BOOK! Morton Sandback is coming to River Heights to read from his new mystery at his daughter's bookstore. Then she's going to surprise him with a rare copy of his very first book. Nancy, Bess, and George can't wait for the fun -- but when Mr. Sandback opens the box, the book is gone! The bookstore is in a very old house full of creepy nooks and hiding places. But Nancy's not afraid, and soon she has some interesting suspects. This time she's solving a real-life mystery -- and it's a page-turning adventure!