CBI 5 The Brain(2022) Malayalam

Aparna is an IPS trainee, who leaves her house for a seminar hosted by the CBI for IPS trainees. DSP Balagopal and Inspector Vinay, two officers from the CBI host the program until they start to talk about several cases that the CBI has handled so far. They discuss a particular case known as the Basket Killings which was successfully investigated by senior CBI officer Sethurama Iyer who is now posted at the CBI Headquarters, Delhi. The case takes place in October 2012 when Home Minister of Kerala state Abdul Samad dies en route to Kerala from Delhi. Many believe his death to be natural circumstances, but some find it mysterious. The suspicions escalate when Samad's personal doctor is also found dead under mysterious circumstances. Protests take place asking the government to order an investigation on the death of Abdul Samad. A journalist named Bhasuran heads these protests and the next day he is found murdered by hanging. A cop named Josemon is also found to be murdered the next day. The police understand that he was murdered by a car that hit and ran over him. The police come to the conclusion that these murders are related and names them the Basket Killings. The case is handed over to DYSP Sathyadas, who is the son of former DYSP Devadas; a corrupt cop and also hates the CBI, particularly Iyer, but the I.G K.C Unnithan is against handing over the case to Sathyadas, citing his corruption. Unnithan shares these concerns with the state police DGP, but he rejects his plea and asks him to wait. Sathyadas finally concludes that the murder of Josemon is linked to a sand trafficker named Sam. Out of suspicion, he takes Sam under custody. Meanwhile, a petition has been moved on court to hand over the case to CBI by Josemon's family. The case is headed by Sathyadas' wife Adv. Pratibha, who seems to have her own reasons for encouraging the petition.