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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.
Sethurama Iyer
Chacko
Vikram
DySP Sathyadas
Balagopal
Paul Meyjo / Mansoor / Sandeep
Chief Minister
Adv. Prathibha Sathyadas
I.G. Unnithan
Vinay, C.I., C.B.I.
Susan George / Ambika Unnithan
Anitha
Sudhi, S.I
SI Iqbal
CI Josemon
Aparna
Anwar
Babu Raj
Sam
Josemon's wife
May 1, 2022
Sethurama Iyer
Chacko
Vikram
DySP Sathyadas
Balagopal
Paul Meyjo / Mansoor / Sandeep
Chief Minister
Adv. Prathibha Sathyadas
I.G. Unnithan
Vinay, C.I., C.B.I.
Susan George / Ambika Unnithan
Anitha
Sudhi, S.I
SI Iqbal
CI Josemon
Aparna
Anwar
Babu Raj
Sam
Josemon's wife
Similar to CBI 5: The Brain
