The fabulous Billie and her pals in the Secret Mystery Club solve three neighbourhood whodunits in their own special way! Spooky House: Billie and her friends dare each other to explore the spooky house at the end of the street. They are sure it's haunted. Sooo scary! But if anyone can handle ghosts, it's Billie B Brown! Code Breaker: One day Billie and Jack find a note hidden under a rock at school. It seems to be written in code! It's time the two friends put their code-breaking skills to the test. Playground Detectives: Billie 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!