Mumbai (Maharashtra) [India], September 2 (ANI): Actor Kareena Kapoor Khan is all set to showcase her de-glam avatar in ‘The Buckingham Murders’. On Monday, she took to Instagram and unveiled a new character poster. https://www.instagram.com/p/C_ZsJNGoDPn/?hl=en In the poster, Kareena has been captured in an intense look. Seems like she is looking at someone suspiciously. “Trailer out tomorrow… see you. (black heart emoji)#TheBuckinghamMurders Only in cinemas on 13th September,” she captioned the post. Recently, the makers released the first track ‘Sada Pyaar Tut Gaya’ from the film. Showcas…