This Malayalam movie comes under the genre of mystery, with Mammootty in the lead role. Nerariyan CBI, directed by K. Madhu comes up with the fourth installment in the franchise of CBI investigative thrillers, following a murder mystery.
The film follows a story exploring a murder mystery regarding a lady who was found dead in a haunted mansion. Before the case was given to the CBI, it was into the consideration that she was dead because of the haunted room in the mansion where she was found.
However, things started to turn up when Sethurama Iyer, played by Mammootty, appears for the investigation from the CBI.
Nerariyan CBI was a box office hit and was addressed as "mood-enhancing" and the cinematography being "commendable."