Director: K. Madhu

Jagratha

A renowned actress, Aswathi, is murdered. When a CBI officer, Sethurama Iyer, investigates the case, he unravels a dark secret about Aswathi which brings forth several complexities.

CBI 5: The Brain

Series of bucket-killing murders happening in the city. Failure to resolve by police, a team of CBI Officers under CBI officer Sethurama Iyer take up the investigation to resolve the never experienced mystery.

Mounam Sammadham

The plot revolves around the wrong conviction of a business man and the efforts taken by the protagonist, a lawyer, to find the truth. The portrayal of the characters is similar in many ways to Malayalam cinema's investigative thrillers. The suspense is well maintained until the climax with little clue to the audience on the identity of the real culprit. The arguments in court were mostly inspired from 12 Angry Men (1957).

Nerariyan CBI

A string of mysterious murders happen in an aristocratic mansion. The owners of the mansion seek CBI officer Sethurama Iyer's help to find the person responsible for the deaths.