Lemony Snicket's A Series of Unfortunate Events
Count Olaf's (Jim Carrey's) tower contains a giant magnifying lens that he used to set the Beaudelaire's house on fire. Klaus (Liam Aiken) uses it to burn the marriage certificate to save Violet (Emily Browning) from being married to Count Olaf, and rescues Sunny (Kara & Shelby Hoffman) from the tower. The final narration lets us know Count Olaf is on the loose, so we can wait for the sequel! The orphans go off to their next unknown guardian.
Thanks, Joy Z!