Shirley Holmes is the great-grandniece of Sherlock Holmes, and she'll stop at nothing to solve a mystery. Using all the cunning and logic of her famed ancestor, Shirley investigates two cases:
In "The Case of the Blazing Star," Shirley visits a racetrack and works to discover why a horse that has always been a loser has suddenly become a big winner.
In "The Case of the King of Hearts," Shirley observes that Ms. Stratmann, the headmistress of her school, has begun acting rather odd. Usually strict and stern with the students, she's suddenly silly and carefree. Is Ms. Stratmann ill, or has something else happended to make the headmistress so happy?