A special day camp lets three cousins get a look at what happens behind the scenes at the zoo, which helps them solve a mystery involving an escaping pet snake and a missing diamond ring.
While visiting Lake Misty Pines, the three cousins hear about an archaeological treasure that may lie on the island in the middle of the lake and try to track a mysterious stranger.
While watching over her neighbor's beehives, Sarah-Jane, Titus, and Timothy find an important clue to the location of a missing strongbox which contains a valuable recipe.
While attending a fancy banquet, Timothy and his cousins go out into the gardens and overhear a conversation that draws them into an unexpected mystery.
Ten-year-old cousins Titus, Timothy, and Sarah-Jane go on vacation together and set out to discover why the dolphins they are visiting don't seem to want to eat.
When an intruder sneaks into a Victorian house that is being renovated and begins stripping off the wallpaper in the parlor, the three cousins help the owner investigate.
When Timothy and his cousins go to the church swap meet, they discover a thief has stolen the white elephant they plan to buy, and it's up to them to find the culprit.
