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.
You can now watch Nerariyan CBI online on the following streaming providers in the United States.
| Directing | K. Madhu | Director |
| Sound | Shyam Sunder | Music |
| Production | K. Madhu | Producer |
| Writing | S. N. Swamy | Writer |
| Camera | Saloo George | Director of Photography |
| Editing | P.C. Mohanan | Editor |
