The Dixon twins try to discover who put the snake in the school cafeteria flour bin on April Fool's Day, clearing an unjustly suspected classmate in the process.
Portia Blake's wildest dreams have come true - her family is moving to Villa Caprice, the old mansion once owned by an eccentic millionairess and there's alot to explore there, if only they dare!.
When she notices some bones missing from a dinosaur skeleton exhibited in the museum, a young girl with a photographic memory tries to discover who has been taking them and why.
