Nate the Great, San Francisco DetectiveBy: Marjorie Weinman Sharmat, Mitchell Sharmat Illustrator: Martha Weston Series: Nate the Great Nate, the great detective, and his dog, Sludge, are off to San Francisco! They're going to visit Nate's cousin Olivia Sharp. She's a detective, too, and a very busy one. Olivia isn't around to solve her case number 22. Her client, Duncan, has lost his joke book. He tells Nate that if the book isn't found and soon the world will come to an end. Nate takes