Muffy's Secret Admirer

Muffy's Secret Admirer is the book version of Love Notes for Muffy, an episode in season 2.

Differences from the cartoon
The book begins after the science fair, and recounts Muffy's deeds as a flashback. In the cartoon, the science fair scenes were shown.

The Phantom of the Opera reference is replaced with Arthur telling Brain to be careful, or else his brilliant science career could be ruined before it even started.