Ben Stiller is joined by the late Robin Williams, in one of his final performances, in the latest trailer for the upcoming "Night at the Museum: Secret of the Tomb."

All new exhibits -- including a Triceratops skeleton and what looks like a many-headed Hydra -- are coming to life in the threequel, this time set at the British Museum, where Stiller must try to figure out a way to save his educational tools-turned-pals.   

In addition to a new setting and some fresh faces, including "Downton Abbey's" Dan Stevens as Sir Lancelot and "Pitch Perfect's" Rebel Wilson as a security guard, the trailer repeats many of the gags (including a urinating monkey) found in the initial trailer, but includes plenty of new jokes and action set pieces as well.

Watch the trailer here:

Co-stars Steve Coogan, Owen WilsonRicky Gervais, and Dick Van Dyke all reprise their former roles, while newcomers also include Oscar winner Ben Kingsley and a certain someone as a neanderthal who looks a lot like Stiller.

It also features the last big screen performance by Hollywood legend Mickey Rooney, who also  passed away earlier this year. 

"Night at the Museum: Secret of the Tomb" opens December 19.

Dave Lewis has been a Los Angeles-based entertainment writer and editor for nearly ten years. Originally hailing from Minneapolis, he moved to L.A. in 1996 to attend USC, before working for various periodicals and web sites including a lengthy stint at He joined the HitFix staff in 2011.