Henry, Jessie, Violet, and Benny are on their way to a comic book convention. The Alden children are searching for a rare comic book of their favorite superhero, Captain Fantastic. When they finally find the comic, they discover something else, too -- a strange note inside, "signed" by the comic's creator. The Aldens soon realize the note is a fake. But when they start to investigate, the mysterious note is stolen! It looks like Captain Fantastic has a real life enemy. Who would want to sabotage a superhero? The Aldens will need their super powers of investigation to catch this comic book culprit!
What do You think about The Comic Book Mystery (2003)?