[s3e12] Kapu (forbidden) Apr 2026

Depending on the time zone and viewer votes, the identified killer varied:

In the Eastern Standard Time airing, fans voted for the Professor's boss as the culprit. Key Locations The episode features several locations across Oahu:

The Five-0 team investigates the death of a college professor whose body was discovered in a tub of acid by a student during a fraternity hazing ritual. The investigation leads the team to a northern private island wildlife reserve where the professor was secretly studying an extinct plant that could potentially cure a rare disease. Subplots: [S3E12] Kapu (Forbidden)

The episode is notable for its interactive format, where viewers were invited to vote in real-time via the show's website to choose the killer from three different suspects.

Tasked with guarding Sang Min , a witness who returned to Hawaii to testify in a federal case. Depending on the time zone and viewer votes,

Accompanied by his nephew Eric Russo , a wayward teen from New Jersey who develops an interest in forensic science during the investigation. Suspects and Viewer Choice

The primary setting for the murder investigation. Subplots: The episode is notable for its interactive

While referred to as a "northernmost private island wildlife reserve," the plot draws inspiration from the real-life restricted island of Ni'ihau, which is often associated with the term "Kapu" (forbidden). "Hawaii Five-0" Kapu (Forbidden) (TV Episode 2013) - IMDb