is the third installment in the legendary Malayalam investigative franchise, featuring the iconic brainy detective portrayed by Mammootty. Written by S. N. Swamy and directed by K. Madhu, the film is a masterclass in slow-burn suspense that avoids physical brawn in favor of sharp analytical deduction. Plot Overview: A Death-Row Confession
as Isow Alex: The convict whose confession sets the plot in motion.
as Balagopal: The officer who originally handled Alex's case. Impact and Legacy
Released on January 23, 2004, the film became the highest-grossing Malayalam movie of that year, cementing the "CBI" brand in Indian cinema. It is often praised for its "Dummy-to-Dummy" investigative techniques and its faithful adherence to the logic-driven storytelling established in the original 1988 film, Oru CBI Diary Kurippu .