The Sisters Grimm (Book 4): Once Upon A Crime, Michael Buckley
Once Upon a Crime is the fourth book of the Sisters Grimm series written by Michael Buckley. When fairy-tale detectives Sabrina and Daphne Grimm venture back to the big city to help a friend, they land in the middle of a big mystery. Puck’s father, King Oberon, has been murdered, and the Grimms suspect one of the many famous (and infamous) fairy-tale folk who call the city home. Can they find the culprit while coming to terms with their mother’s secret life? And will Sabrina ever accept her family’s destiny?