Finding a mysterious note hidden in your desk can turn an ordinary school day into an exciting puzzle! The Brewster Elementary Science Fair is fast approaching, and Heidi Heckelbeck is busy getting her project perfectly organized. Right in the middle of all the science fair chaos, Heidi discovers that she has a secret admirer who is leaving her sweet messages. Heidi is incredibly curious and completely determined to figure out exactly who is writing the notes. When ordinary detective work fails, she decides to carefully open her Book of Spells to reveal the mystery person's true identity. You will be guessing right along with Heidi as she uses her magical powers to follow the clues and uncover the truth. Join Heidi for a fun and surprising mystery as she learns about friendship, pays attention to the people around her, and realizes that the answer is sometimes hiding right in plain sight.