As the town approaches its 100th birthday Encyclopedia Brown and Sally must recover the town's stolen time capsule.

Something eerie is going on in Idaville when a flying saucer appears in the night sky. Encyclopedia Brown and his side-kick Sally interrupt their camping getaway to brave the unknown and uncover the mystery of the U.F.O.

Davey looks like a sure winner in a funny car derby, that is, until someone steals his car. Encyclopedia Brown steps in to solve the mystery.

Has the ghost of the Wildcat Kid returned to tell of his treasure in Idaville? Encyclopedia Brown is on the case to scare up some truth.

Encyclopedia Brown investigates who set the fires in the library and whether the case of the hidden money is a scam or not.

The big Idaville magic show is spoiled when a mountain lion belonging to The Incredible Culpepper is stolen. E.B. and Sally are immediately on the case and identify several suspects.

Encyclopedia looks into the late night theft of a priceless collection of baseball cards.