The third book in an exciting new middle grade mystery series from actress, artist, and YouTube star Hayley LeBlanc! 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...