Nibunan

A CB-CID DSP known for his sharp deductive mind and unwavering commitment to justice. He battles Parkinson's disease while juggling a peaceful home life with his wife Shilpa and daughter Oviya. He connects the present murders to a case from years past and orchestrates a controversial plan to eliminate five criminals and pin the killer’s crimes on someone else.

A CB-CID inspector who works closely with Ranjith and Vandana. He is diligent, principled, and fearless, digging for connections even when investigations get dangerous. He and Vandana become central to exposing how past cases tie into the current killings.

A capable CB-CID inspector who collaborates with Ranjith to solve the murders. She shows resilience under pressure, supports the investigation, and helps pursue leads that connect the present crimes to the earlier case.

Ranjith’s wife, a steady presence who keeps the family grounded as the case intensifies. She provides emotional support and navigates the fear of a killer targeting their circle while the police chase leads.

Ranjith’s younger brother who shares a close bond with him and stands by the family during the perilous investigation. He contributes to the emotional core and underlines the stakes of keeping the peace at home.

A wealthy architect and the father of Catherine. Behind a polished public persona, he and his wife are revealed to have murdered Mariadas after discovering Catherine’s puberty, driven by guilt and fear of exposure.

The daughter of Emmanuel and his wife, whose puberty and the family’s secret contribute to the tragic backstory. Her death is central to the past case and motivates the killers’ actions.

Emmanuel’s nephew who arrives in India and becomes entwined in the killer’s plan. He is suspected as the killer’s motive and the one who exacerbates the deadly chain of events.

A local communist leader whose disappearance and death trigger the reopening of the case and influence the investigation’s political dimension.

A pathologist who performs Catherine’s autopsy and plays a pivotal role in presenting forensic findings during the investigation and court proceedings.

A doctor involved in the investigation, contributing to the medical and forensic context surrounding the crimes.

Emmanuel’s wife, a central figure in the past tragedy that revealed the couple’s crime and guilt, ultimately ending in their joint decision to hang themselves.