Overview
- Lindsey Allison posted a sixth‑anniversary tribute describing "untold hate and anger" toward Nathan Costello and saying she believes "karma" will reach him.
- Black, an 18‑year‑old computer science student visiting family in Stockton‑on‑Tees in February 2020, was killed after going to Costello’s home the morning after a party.
- Trial evidence said Costello stabbed Black 64 times, including 40 wounds to the head, with a blade left embedded in his skull.
- Costello, described as in his 30s, confessed in text messages before later claiming no memory, and was convicted of murder and sentenced to life with a 21‑year minimum term.
- The family’s trauma deepened during the trial when Allison’s younger brother, Niki, died by suicide after hearing details in court.