In Hayley Mysteries: The Secret on Set, Hayley has the lead role in a TV show about a young detective, and when strange things happen around the studio, she and her friends become real-life sleuths. Now Hayley and her co-stars investigate their most spine-chilling case yet!

Working on a Hollywood set, Hayley's seen all kinds of creepy special effects. When she comes across what appears to be a dead body under a sheet at Silver Screen Studios, though, she's sure she's found evidence of a real crime! But when she brings the security guard back to the scene, the body has vanished, and it seems someone in the cast or crew is playing a mysterious prank. Could the culprit be the show's latest guest star, who's famous for his vampire films? It's up to Hayley and her two best friends to find out!

The perfect choice for anyone looking for mystery books for kids 9-12!