Moonheart is an urban fantasy novel by Charles de Lint. It takes place in 1980s Ottawa, where Sara Kendell and Jamie Tamson, owners of an antique store, come into possession of a peculiar ring. At the same time Kieran Foy, a wizard of sorts, is searching for his missing mentor, Thomas Hengwr, while simultaneously eluding the newly formed Project Mindreach from the RCMP.