Season 1 Plot
SI Vetri uncovers a sinister plot by a medical team attempting to cover up the deaths of young participants in a clinical trial by disguising them as accidents.
Regai Season 1 aired on November 28th, 2025.
Season 1 Episodes
1. The Dead End
SI Vetri investigates the mysterious death of Amudhan, a close friend, but is forced to file it as an accident. Later, Vetri and Constable Sandhya discover blood dripping from an ice cream cart.
2. The Fingerprint Revealed
Vetri and Sandhya find two severed human hands in the cart. They take them to the government hospital and question Dr Pushpavalli. Later, Vetri realises that Amudhan's death is related to this case.
3. The Trap
Vetri reopens Amudhan’s case. He goes back to the crime scene and discovers more fingerprints related to the cart case. Vetri and Sandhya talk to the other victim’s families.
4. Divya's Escape
Vetri and Sandhya nab Divya, who attacks them during interrogation. The forensic department cracks open Amudhan's phone and finds the fifth victim. Divya escapes the hospital after injuring Sandhya.
5. The Clinical Crime
An unconscious Sandhya is taken away from the hospital. On the other hand, Vetri nabs Divya, who is trying to kill the mortuary attendant. Divya confesses to the crimes, but Vetri gets a threat call.
6. And That's How She Died
Divya, scared for her life, reveals the main culprit behind the illegal drug trials. As Vetri runs to save Sandhya, he has a masterplan prepared to arrest the one who killed Amudhan and his friends.
