Stephen McCullagh, a 36-year-old YouTuber, has been sentenced to a minimum of 31 years in prison for the murder of his pregnant girlfriend, Natalie McNally, aged 32. The tragic incident occurred on December 18, 2022, when McNally was found dead at her home in Lurgan, Northern Ireland, suffering from multiple stab wounds, signs of strangulation, and severe head trauma.
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On the night of the murder, McCullagh attempted to create an alibi by streaming a six-hour gaming session on YouTube, during which he played titles including Grand Theft Auto: Vice City and Robot Wars. Initially, this ploy seemed to have succeeded as he was released after being questioned by police the day following McNally’s death. YouTube verified that the livestream had indeed taken place as he claimed.
Determined to deflect suspicion, McCullagh presented himself as a grieving partner. He attended McNally’s wake, visited her gravesite, and even produced a memorial video. Adding to the complexity of the case, he speculated that McNally’s ex-boyfriend might have been involved in her murder. However, his carefully constructed façade would soon unravel.
Police investigators soon discovered evidence suggesting that the livestream was not what it appeared to be. It became evident that McCullagh had pre-recorded his gaming session, allowing him to travel about 17 miles from Lisburn to Lurgan, commit the murder, and return home before the stream ended. PSNI senior investigating officer Neil McGuinness described McCullagh’s tactics as deeply manipulative, noting the confidence with which he played the victim in the aftermath of McNally’s death.
As the investigation progressed, officers reviewed CCTV footage that captured an individual with a covered face boarding a bus headed toward Lurgan, carrying a bag similar to one seen in the vicinity of McNally’s home. This lead heightened suspicions against McCullagh, particularly as the suspect closely matched his physical description.
Law enforcement also studied the technical details of the livestreaming process. They found discrepancies in the background data recorded during his supposed live broadcast. Unlike actual live streams, which would record all activities, McCullagh’s pre-recorded segment showed gaps indicative of breaks, wiping away any credibility from his alibi.
On January 31, 2023, his deceptions caught up to him as he was rearrested and charged with murder. Following a trial that concluded in March 2026, McCullagh was found guilty and subsequently sentenced to a minimum of 31 years behind bars, a decision that Judge Kinney reported was influenced by the level of planning evident in the crime, as well as McCullagh’s manipulation of those around him.
The court revealed that McNally had many qualities of strength and independence, and her family was devastated by the loss of both her and her unborn child. Outside the courthouse, her father, Noel, expressed the hope that this case would serve as a stern warning against domestic violence, which remains a critical issue in Northern Ireland.
Following the sentencing, McGuinness reflected on the profound impact of this tragedy, stating that the McNally family faced unimaginable grief yet displayed remarkable dignity and fortitude throughout the investigation. He contrasted their kindness with the cruelty inherent in McCullagh’s actions.
This case has sparked broader discussions about domestic violence and the need for continued vigilance. As the community seeks to heal from this tragedy, it stands as a sobering reminder of the consequences of abusive relationships. Resources and support systems are available for those who may find themselves in similar situations, emphasising that help is always within reach.