Oru CBI Diary Kurippu

A police inquiry into the suicide of Omana, a businessman's daughter-in-law, starts to unravel when the clues keep pointing toward murder. The case lands with CBI officer Sethurama Iyer (Mammootty), who works it alongside Vikram (Jagathy Sreekumar), Harry (Suresh Gopi) and Chacko (Mukesh). K. Madhu lays the investigation out one piece of evidence at a time and lets the story pull tighter with each new fact.