Serving justice . . . and lunch

Lunch Lady can sniff out something rotten like no one else--and there's definitely something rotten going on in the library. The usually friendly librarians have become cold and secretive. Even Dee can't seem to crack a smile out of them. What darkness may lurk in the hearts of librarians? Lunch Lady is on the case And Hector, Terrence, and Dee are along for a wild ride