The Thief Lord is a 2006 German-British family drama film written and directed by Richard Claus and co-written by Daniel Musgrave, based on the 2000 novel of the same title, by German author Cornelia Funke. It was a joint production of Warner Bros. Pictures, Future Films Limited, Comet Film, and Thema Production and is distributed by Warner Bros. under their Family Entertainment label.

Plot

When Prosper and Boniface's parents die, their aunt Esther plans to adopt six-year-old Bo and send 12-year-old Prosper away to boarding school. But before she can separate the two, Prosper takes Bo to Venice, the city about which their mother had often told them stories. In Venice, the boys meet the Thief Lord, a mask-wearing teenager named Scipio. The Thief Lord invites the boys to come to his hideout, an abandoned cinema called the Stella, which is also home to three orphaned children Scipio has rescued: Hornet, Riccio, and Mosca. Meanwhile, the boys' aunt and uncle, Esther and Max Hartlieb have traveled to Venice to find their nephews and hired Victor Getz to help.