CBI 5: The Brain

CBI 5: The Brain

Year: 2022

Runtime: 163 mins

Language: Malayalam

Director: K. Madhu

Echo Score: 38
ThrillerCrimeThrillers and murder mysteriesSuspenseful crime thrillersIntriguing and suspenseful murder mysteries

A spate of gruesome bucket‑killing murders sweeps the city, baffling the local police. When the investigations stall, a specialised CBI team led by senior officer Sethurama Iyer steps in, determined to untangle the unprecedented, never‑before‑seen mystery behind the killings.

Warning: spoilers below!

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Timeline – CBI 5: The Brain (2022)

Trace every key event in CBI 5: The Brain (2022) with our detailed, chronological timeline. Perfect for unpacking nonlinear stories, spotting hidden connections, and understanding how each scene builds toward the film’s climax. Whether you're revisiting or decoding for the first time, this timeline gives you the full picture.

1

IPS seminar opens with Aparna

Aparna attends a CBI hosted seminar for IPS trainees, where DSP Balagopal and Inspector Vinay host the session. The program frames the Basket Killings case as a focal point and introduces the looming involvement of senior CBI officer Sethurama Iyer.

October 2012 CBI seminar venue
2

Abdul Samad dies en route

Home Minister Abdul Samad dies while traveling by aircraft from Delhi to Nedumbassery. The death is surrounded by suspicion, fueling calls for a deeper probe into possible foul play behind the Basket Killings.

October 2012 Air en route to Nedumbassery, Kerala
3

Dr Venu dies; protests begin

Samad's doctor, Venu, is found dead under mysterious circumstances, triggering protests and intensifying demands for an investigation into Samad's death. The public discourse widens the scope of the Basket Killings case.

October 2012
4

Basket Killings unfold: Bhasuran and Josemon killed

Protests escalate against the government, and journalist Bhasuran is murdered by hanging, followed by the murder of police officer Josemon in a hit-and-run incident. Authorities link these deaths as connected acts within the Basket Killings saga.

October 2012 Kerala
5

DYSP Sathyadas takes over; political maneuvering begins

The case is handed to the corrupt DYSP Sathyadas, who clashes with Iyer and the CBI. Adv. Pratibha, Sathyadas' wife, leads a petition to transfer the case to the CBI, adding a layer of political maneuvering to the investigation.

Late 2012 Kerala; court
6

Balagopal seeks to withdraw workload petition

Balagopal revisits the workload petition decision and pushes to withdraw it, aiming to facilitate a CBI takeover. Senior officials, including the DGP, are drawn into the push to reassign the case.

Late 2012 New Delhi; Kerala
7

Case handed to the CBI; Iyer travels to Kerala

The investigation is formally handed over to the CBI and Iyer is summoned to Kerala to lead the inquiry. He reconnects with Kerala officials and aligns with the local CBI office for the case.

Late 2012 Kerala
8

Mansoor thread surfaces

Iyer learns that a youth named Mansoor, related to Samad, joined a militant group years earlier. This link broadens the inquiry toward militant ties and political connections around the minister and the Chief Minister.

Late 2012
9

Sam and Susan link; Samad’s death suspected as target shift

Investigators probe Sam and his circle, including Adv. Pratibha. Samad’s death is scrutinized as potentially accidental, with clues pointing toward the possibility that the intended target was Susan, a patient of Dr Venu. The investigation begins threading together medical and political connections.

Late 2012
10

Meyjo identified as Paul Meyjo; Sandeep CCTV clue

A lead from Delhi Airport CCTV identifies a man named Sandeep, connected to DYSP Vikram, a murder target. He is later revealed to be Paul Meyjo, a figure tied to Ray the pacemaker notes and the broader conspiracy.

2012 Delhi and Kerala
11

Pacemaker hacking notes; Meyjo released

Meyjo explains that he crafted designs to hack pacemakers to counter Dr. Venu’s claim, but the lack of conclusive evidence leads to his release. The absence of decisive proof leaves the conspiracy shrouded in ambiguity.

2012
12

Unnithan arrested; Susan revealed as Ambika

Iyer pieces together the case and uncovers that Abdul Samad’s murder involved orders from Sam and Unnithan. Susan is revealed as Ambika, Unnithan's ex-wife, linking the personal and political abuse behind the killings. Unnithan is arrested but dies of a heart attack during the trial.

2013 Kerala
13

Final confrontation: Meyjo warns Iyer

In a tense post-arrest moment, Meyjo corners Iyer in prison and warns that Iyer is his next target. Iyer remains self-assured, mentioning Vikram and the persistent danger as he walks away, leaving the ending with a chilling unresolved tension.

After arrest, 2013 Prison

Last Updated: October 01, 2025 at 10:23

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Characters, Settings & Themes in CBI 5: The Brain

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