Another fun romp through Manhattan, both above and below-ground. Once again the Irregulars are keeping secrets from one another, once again they must overcome their distrust and learn to work together to right wrongs. But this time Oona takes center stage, along with ancient Chinese artifacts, classic nude paintings, the desire to be loved by one's parents, and squirrels of unusual size and intelligence. Fun stuff with a little bit of burgeoning romance off to one side.
Also, many useful tips.
Library copy