Fourth grader Penina -- aka Pinky -- is a Yankees fan, an older sister, and Brooklyn's greatest kid detective. With the help of her pet cat, her best pal Lucy Chang, and her little brother, Avi, Pinky unravels a vexing mystery -- what happened to the antique Kiddush cup that went missing from a museum exhibit? Pinky and her team get to the bottom of things through a series of exciting and intriguing adventures! -- From the publisher.