Though scholars and popularizers have previously written on King Charles's madness and its cultural-historical context the timing as well as the approach of Julie Singer's latest book render it all the more meaningful to us nowadays. No stranger to exploring scientific models for literary texts, Singer also astutely begins by surveying the two more familiar approaches to mental illness, the medical and legal. This is especially valuable, even when treated briefly, because, as she asserts, while information on these aspects is comprehensive enough up through the thirteenth centuries, it remains 'largely in the shadows' for the fourteenth and fifteenth centuries.