Eric is accused of poisoning a rare spider and runs away; Fillmore discovers that Eric is trying to prove his innocence and is being framed.
Someone is giving the bullies a taste of their own medicine; Fillmore and Ingrid must stop the attacks and prove violence is not the way to stop bullies.
Fillmore is framed while investigating some bullies who are stealing pupils' lunches; he risks expulsion due to the principal's three-strikes rule, but an unexpected champion comes to his rescue.
Strange things start happening during a computer game show, with events mirroring the moves in a game; Fillmore must find out if one of the gamers is responsible.
The search for a missing student uncovers an impending computer virus.
The statue of a cartoon hero is defaced and Fillmore investigates; he discovers that the culprit was a fan protesting the standard of the scripts for the new series.
Fillmore is trying to help Peter, a new recruit to the patrol, but he keeps making mistakes; his brother is student council president and Peter is being forced to do a job he hates.
Fillmore has to take part in a mini golf tournament to try to uncover some strange incidents; he finds the tournament is being rigged for profit by the comic book king.
Fillmore meets his old friend Penny, who's now working for a diplomat; she says her boss is involved in corruption, but is hiding behind diplomatic immunity; Fillmore discovers that Penny is involved, too.
Fillmore visits his old friend Wayne, who's now on the safety patrol at another school; Wayne is dealing with corruption at the school and his place on the patrol is threatened.
Dewey's robot dog disappears during Linus' illusionist act and Linus gets into trouble; Fillmore is convinced it's not his fault and sets out to find the real villain.
A phantom shredder is attacking the projects of pupils in the drama club; Fillmore brings in a Frank, a profiler who used to be on the patrol, to help find the culprit; Fillmore is afraid Frank himself may be involved.
A school scandal leads Fillmore and Ingrid into an investigation involving a gambling underworld.
Fillmore recruits an old friend from his days of delinquency to help crack a case.
The big chess competition is coming up and Fillmore must guard the school's champion Checkmatey, as threats have been made against him.
Fillmore and Ingrid go under cover to stop a scooter-jacking ring.
A field trip goes wrong when someone paints a mustache on one of the paintings.
Fillmore tries to foil would-be math test cheaters during a snowy day at school.
Ingrid arrives at X Middle School and teams up with Fillmore.
Fillmore and Ingrid race against time to save a boy's beloved virtual pet.
Fillmore and Ingrid try to figure out who is undermining the model train convention.
Ingrid goes under cover to expose the Red Robins' nefarious activities.
Ingrid and Fillmore try to find out who kidnapped the school mascot.
Fillmore and Ingrid investigate the biggest library book heist in X Middle School's history.
Fillmore and Ingrid track down the culprit who stole exams from the school.
Ingrid and Fillmore hunt for a graffiti artist.