The CBI film series

The CBI film series is a collection of four Malayalam films directed by K. Madhu and written by S. N. Swami. The series features Mammootty as Sethurama Iyer, a Central Bureau of Investigation (CBI) officer, and centers on his investigations into murder cases. Beginning in 1988 with the film Oru CBI Diary Kurippu, the series continued through 2022, comprising a total of five films with a combined runtime of 737 minutes. The films depict a team of CBI officers led by Sethurama Iyer as they investigate complex murder cases. Sethurama Iyer CBI (2004) and Nerariyan CBI (2005) are examples within the series that showcase this recurring premise. The collection spans 34 years, with a total budget and revenue of zero. The five films in the series have a combined runtime of 737 minutes. The series was active from 1988 to 2022.