Robin Williams last movie was "Night at the Museum: Secret of the Tomb," which was released in 2014. In the movie, he reprised his role as Theodore Roosevelt. However, according to the films director, Shawn Levy, Williams was emotionally "crumbling" while filming the movie, and it was clear that something was going on with him. Williams was struggling to remember lines and combine the right words with the performance, and he was calling Levy at all hours of the night to ask if his work was usable. Williams was battling Lewy body dementia, an incurable disease that impairs the brains function, at the time of his death in August 2014.