Ian McKellen reunites with Gods and Monsters director Bill Condon to play an elderly Sherlock Holmes in Mr. Holmes.  It is definitely an interesting concept to have a film about the world's greatest detective solving one last case at an age when he's not as sharp as he used to be.  There isn't really all that much revealed about the specific plot of Mr. Holmes in this first teaser trailer, other than the fact Holmes' main companion in this film is a boy named Roger.  I will definitely be interested in checking out Mr. Holmes when it is released later this year.