The CBI film series is a series of four Malayalam films directed by K. Madhu and written by S. N. Swami featuring Mammootty as Sethurama Iyer, a Central Bureau of Investigation (CBI) officer. The series started off in 1988 with the block buster Oru CBI Diary Kurippu. The films depicts a team of CBI officers led by Sethurama Iyer investigating into a murder case.
Oru CBI Diary Kurippu

NR2h 12m8.1

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A local businessman's daughter-in-law, Omana, is found dead, initially believed to be a suicide, but investigator Prabhakara Varma is convinced that something more sinister is at play.

Nerariyan CBI

NR2h 27m6

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A CBI officer, Sethurama Iyer, sets out to uncover the truth behind the murder of a girl named Mythili, which took place in a notorious haunted mansion years ago.

CBI 5

NR2h 43m5.6

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A wave of murders plagues the city, leaving the police baffled. Enter a team of skilled CBI Officers, led by the seasoned CBI officer Sethurama Iyer, who take on the challenge to crack the case and uncover the truth.

The CBI film series background