1) Suspense thrillers should give a chance to guess.
2) Efficiency of Kerala Police in the movie and their investigations is too mediocre.
3) Change of investigation officer, just prolongs the movie.
4) A movie is a continuation of a story and not bring up a completely different story at the end.
5) Even if the killer tried to use decoys, technology fails all the time lol, the director is funny and not serious for sure.