Uyarangalil

An ambitious, charismatic assistant manager who engineers a conspiracy to loot the company's funds. He lures two debt-ridden subordinates into the plot and kills A. K. Menon to silence him. After rising to manager, he seduces Devi and Padma to siphon off potential bereavement benefits and cash, all while maintaining a calm, normal demeanor. He fabricates alibis and uses fear to keep the others in line.

Johnie is a debt-ridden subordinate drawn into Jayarajan's plan. He wrestles with guilt as the conspiracy deepens and tries to stay quiet to avoid suspicion. Jayarajan eliminates him by orchestrating a jeep accident to keep the crime hidden.

Padma is a money-motivated nurse who becomes involved with Jayarajan for financial gain. She is seduced and used as part of his scheme to siphon Menon's bereavement benefits and plantation money. She shares a dangerous intimacy with him, blurring lines between affection and manipulation. Jayarajan murders her by strangulation to keep the truth from surfacing.

Devi is the bereaved wife of Menon, newly arriving on the plantation to settle his affairs. She quickly becomes a target for Jayarajan's scheming as he aims to control her late husband's benefits. Her insistence on a proper marriage raises the stakes, leading Jayarajan to plot her elimination, though she survives the immediate danger as the truth begins to surface.

Menon is the plantation manager whose murder sets off the plot. He is portrayed as negligent toward Devi, yet his death triggers the chain of events that reveal Jayarajan's ambition and deceit.

Ravi is the plantation's investigating officer who becomes suspicious of Jayarajan despite a flawless outward persona. He digs into past actions and follows leads, keeping a watchful eye on the manager. His pursuit edges the plot toward discovery, culminating in Jayarajan's suicide as the net closes.