The Sanctuary (2009)

Plot

Set in 1897, a notorious group known as the "Poisoned Knife" clan infiltrates the Thai royal palace to steal precious Royal Antiques, intended for America as a gesture of gratitude for diplomatic support. Although they manage to make off with the treasures, their escape is short-lived, leading to their demise. In a final act of defiance during his interrogation, the last surviving thief takes his own life with Master Sawang’s sword, taking the secret of the antiques’ hidden location to the grave, leaving the fate of the treasures shrouded in mystery.