When Thomas' sister, Tia, gets kidnapped during an art trip to Venice, no one will believe he has a vital clue, especially when he's so clumsy.

Ever since Tia lost her sight, Thomas has been by her side. But Tia is the second girl to go missing in Venice that week and now it's up to Thomas to race across the city, navigating canals, carnival parades and masked balls, and uncover a hair-raising conspiracy.