Ghosts in the Attic

Cast(in order of appearance): Mrs. Jacobson, Mr. Jacobson, Calvin Jacobson, Hobbes Jacobson, Susie Derkins

Plot
When Calvin and Hobbes start hearing strange noises coming from the attic night and day, they can only come to one conclusion: they have ghosts living in the attic!

Transcript
Ghosts in the Attic Transcript

Trivia

 * This is the thirteenth episode of Calvin and Hobbes the Animated Cartoon Adventures, explaining why this is a scary episode.
 * This is not the only time this happens. This is also referenced in Disaster After Disaster, where the plot is where Dr. Brainstorm makes a bad luck device, and it was the thirteenth episode of its season.
 * This is not a Halloween episode because it did not air in October. Season 1 never had a Halloween episode, but Season 2 did.