The trailer for Night at the Museum: Secret of the Tomb is out, and this time the gang is headed to London's British Museum. The film is the third and final installment in the trilogy, which began in 2006 with security guard Larry Daley (Ben Stiller) and the come-to-life artifacts at the American Museum of Natural History in New York City. The 2009 sequel took place at National Air and Space Museum in Washington, D.C. In Secret of the Tomb, Larry and the artifacts are on a quest to preserve the magic that keeps them alive at night, all of which requires a jaunt across the pond to London. The film comes out in December and features Stiller, Robin Williams and Owen Wilson, plus Ben Kingsley, Rebel Wilson and Dan Stevens (from "Downton Abbey"), who are new to the trilogy.