"Detective and mystery stories." . . "Children's stories." . . "Friendship Juvenile fiction." . . . . "Brown, Billie B. (Fictitious character Juvenile fiction)." . . . "Playground detectives : a Billie B. mystery" . . . . . . "Billy and the Secret Mystery Club have a new case to solve. Who has put leaves in Lola's sandwich? It's a real mystery. Soon everyone suspects Benny, but could they have the wrong kid? It's up to the SMC to find the real culprit!" . . . . . . "Playground detectives" . "Mystery fiction" . . . "Juvenile works" . . . "Fiction" . "Clubs Juvenile fiction." . .