Wishbone and his friends try to find out who is threatening to destroy the exhibit of a newly-discovered dinosaur at the Oakdale College Museum of Natural History.

When he accompanies Joe and his friends to look for treasure in the condemned Trumbull barn, Wishbone imagines himself as young Jim Hawkins who acquires a treasure map and soon finds himself involved with dangeorous pirates.

When they help restore the Skeleton Reef Lighthouse for the Oakland Historical Society, Joe and Wishbone discover that the lighthouse holds the key to incredible treasure and to some dark and dangerous secrets.

When Joe's team is in the running for the basketball playoffs, Wishbone is reminded not to judge people by size as he imagines himself as the seventeenth-century traveler, Lemuel Gulliver, whose adventures included visits to Lilliput, where people are six inches tall, and Brobdingnag, a land peopled by giants.

When videotapes are stolen by one of the stranded passengers, the ensuing problems complicate their attempts to survive an oncoming storm.

"There's treasure in Oakdale! To find it, Wishbone, Joe, Samantha, and David must enter the condemned Trumbull barn. This reminds Wishbone of the high-seas tale Treasure Island, and he imagines himself as the orphaned Jim Hawkins, who follows up a map to excitement -- and treasure! Soon Jim finds himself face to face with dangerous pirates and involved in the adventure of a lifetime. Only a special breed of hero -- one with canine courage and...

Lewis Barnavelt tries to avert disaster when the destruction of an old bridge threatens to release a diabolical force, the legacy of a long-dead evil magician.

Lewis Barnavelt and his uncle are in England, visiting a cousin at Barnavelt Manor. Lewis accidentally unleashes a maniacal ghost.