After Timothy copies a papier-mache snake from a mural for a Christmas present for Titus, he and his cousins find that the snake on the mural has changed.

Titus, Timothy and Sarah-Jane run into their young cousin Patience, who is full of tall tales about 'the other Titus'. When a teenager mistakenly gives Titus a strange message, the cousins know there's a mystery to solve.

While celebrating "Christmas in July," the three cousins come into some stolen art works and discover that even bad boys can be good.

When a vandal sabotages restoration work at a run-down lighthouse, the cousins set out to find the culprit.

When Buster the scarecrow, a popular feature of the Fairfield Fall Festival, disappears shortly before the beginning of the big event, the three cousins set out to find him.