Book excerpt: The Lost Treasure of Casa Loma brings Tom and Liz Austen to Casa Loma, a castle right in the heart of downtown Toronto, where they must solve the mystery of Sir Nigel Brampton's disappearance, and find the treasure hidden somewhere in the castle. Appealing to children's inherent keen interest in mystery, Eric Wilson has skillfully woven accurate Canadian geographic and historic information into his writing. As such, these novels lend themselves to the integrated study of the mystery genre with Canadian geography topics in social studies, and investigation units in science. The Lost Treasure of Casa Loma provides rich material for the study of setting, characterization and plot development. This Novel Study provides a teacher and student section with a variety of activities, chapter questions, crossword, and answer key to create a well-rounded lesson plan.