Unnatural

Unable to accept that their healthy son's sudden death was caused by coronary heart disease, two heartbroken parents bring their case to the UDI Lab.

The UDI team discovers that one of the victims in a group suicide might have actually been murdered — and there may still be another victim.

In place of a retired colleague, Mikoto agrees to serve as an expert witness at the trial of a husband accused of murdering his wife.

When a father working long hours in a factory dies in a motorcycle accident, the UDI team must determine who is ultimately at fault.

Mikoto learns something shocking about Nakado. Later, a widow asks the UDI team to look deeper into his wife's cause of death.

When Shoji becomes a murder suspect after she wakes up next to a dead man, Mikoto and the rest of the UDI team fight to clear her name.

A mysterious person posts a livestream of themselves next to a body they claim to have killed — and the only person he'll speak to is Mikoto.

While working to identify all the bodies found after a building fire, Mikoto theorizes that they may be looking at a cover-up for murder.

Another woman turns up dead with a goldfish-shaped mark in her mouth, but the police refuse to connect the case to the death of Nakado's girlfriend.

Still under suspicion, Takase turns himself into police, but denies killing anyone — and there's no solid evidence tying him to any of the murders.