First things first, no Raat Akeli Hai is not a remake of Knives Out. Yes they are based on same concept of rich family patriarch's murder in a mansion but the storyline and sub-genre is different. While Knives Out had a good dose of humor but this one is very serious and even takes a dark turn in the climax.
Like the trend in most movies and shows these days, Raat Akeli Hai is also based in small town India so it seemed like a tailor made role for Nawazuddin who is spot on as a thana incharge trying to solve a case of whodunnit involving big names. He is a very sincere cop who stands up against pressure from his bosses and ridicule from his colleagues for pursuing an angle which everybody believes is a dead end.
Editing could have been a bit tighter but overall the movie manages to engage you till the end with superb acting and direction. Grab some popcorn and watch it to get your high of a good desi crime thriller.