The Library Mystery Author Widmark, Martin Illustrator Willis, Helena Swedish title Biblioteksmysteriet Series Lasse Maja´s Detective Agency Category Children \ Fiction 6-9 Pub Date Oct 12, 2007 Format 96 pages, b/w illustrations, 148 x 210 mm Books are disappearing from the library in Valleby. How is that possible, after all the library has had an alarm installed! Lasse and Maja are facing their thirteenth case!