The Edison Twins - Season 4 (1985)

While exploring the wilderness for fossils, Annie and Lance discover a cave, but before Tom can follow them inside, the mouth of the cave collapses, trapping Annie and Lance inside.

Tom is trying to design an experimental set of laser headphones, Annie is designing the lighting board for a local theatre group, and Lance has designs to meet the girl of his dreams, Juliet in the theatres production of Romero and Juliet

After watching a run of Humphrey Bogart movies in air-conditioned splendor, Paul and Joey hit the street during the summers worst heat wave and begin to see suspicious criminal types at every turn.

The Edison family become charmed by the amazing adventure stories of world famous balloonist Maurice Lafayette, who is in town while his daughter Elaine to raise funds for their next spectacular expedition.

Paul and Joey find themselves in trouble when Paul climbs a fence to retrieve his remote control helicopter which has accidentally crashed onto the high security grounds of a computer chip research company.

Annie leaves Tom holding the shovel on a zoopoo detail at the Weston Zoo when she remembers her odder to help Paul find information fro his school project on ostriches.

In an effort to promote family togetherness, Tom and Annie lure their parents into the annual Weston Fishing Derby. A comedic battle of the sexes ensures when the boys bait the girls into a competition.

Tom, Annie, and Paul are representing Weston in an orienteering contest. They must travel on a trail and look for clues that were placed earlier. Each clue must be deciphered in order to tell them which way to go to find the next clue.

After their campsite is ransacked, Annie insists on finishing the orienteering race and rallies the Weston team to a spirited finish, before accompanying Tom in a search for the Windigo monster. As night sets in, Tom and Annie follow the trail of the woodland marauder and Paul and Lance lose each other in the forest. Alone in the woods, Paul overcomes his fear and makes a startling discovery and Annie is saved from a poisonous snake by the mysterious Windigo.

After agreeing to give himself up to the forest ranger to clear himself of the charge that he has been vandalizing the forest, Ken Bradley, (the Windigo), mysteriously disappears and Tom and Annie suspect foul play.