Stephen Mccullagh

Firstly, he pointed to the YouTube broadcast, which seemingly proved that he was at home at the time of the killing.

Then he claimed Natalie had been suffering a campaign of harassment by a former boyfriend.

I'd like to appeal to my sister's killer to do a decent thing and confess to her murder.

Christmas 2022, and Natalie's brother, Niall, makes an emotional call for her murderer to give himself up.

I can't actually put into words the heartache we're experiencing.

By now, police had checked out McCullough's YouTube alibi and released him.

They'd also tracked down Natalie's ex-boyfriend, who McCullough claimed was harassing her, but eliminated him from their inquiries.

Nat's really was the best sister ever and such a lovely person.