The Boxcar Children, now living with their grandfather, spend the summer on their Aunt Jane's ranch. Their aunt seems quite unhappy until at the end of the summer a surprise discovery brings happiness to all.

When the Aldens go to the Pickering Natural History Museum to assist with the opening of a dinosaur exhibit, their work is hampered by a series of mysterious happenings.

The Aldens investigate when the arrival of several suspicious characters in Greenfield coincides with a mystery involving a popular boy actor.

Cam investigates when a thief steals her mother's video camera and a tape containing footage of a big scary snake.

While visiting their cousin's pineapple plantation in Hawaii, the Aldens hear a local legend about a black pearl with a curse on it and investigate mysterious incidents on and around the plantation.

MISSION: To investigate the shady goings-on at the exclusive private boarding school Willis Firth Academy. LOCATION: The mountains of New England. POTENTIAL VICTIMS: The brothers of Gamma Theta Theta, the most elite fraternity on campus, seem to be on the receiving end of all of Firth's biggest (and most dangerous) problems. SUSPECTS: The members of the frat may seem like brothers to everyone else, but Gamma Theta Theta insiders know that within...

The Alden family rents a houseboat to drift down the river, and encounters a mystery in the little towns along the river, involving a fast black car.

Chief Inspector Albert the duck and his three detective assistants follow a series of clues to find the batch of pumpkins stolen from the town pumpkin patch.

Soon after Grandpa's teeth disappear from a glass of water near his bed, Inspector Rate has the whole town under investigation.

When Stevie Bell is finally able to return to Ellingham Academy after identifying the culprit in the murder of a classmate, she begins to wonder if the case was really resolved and attempts to uncover the truth about the school's founder.