Donald McAvoy, the half-brother of Hollywood actor James McAvoy, was involved in a brutal attack on a fellow inmate, Colin Lindsay, during visiting hours at HMP Saughton in Edinburgh. McAvoy, aged 36, used a concealed blade to slash Lindsay's face, a shocking incident captured on CCTV. The footage showed prison staff quickly intervening to subdue McAvoy, who was carrying the weapon on the day of the attack, which occurred on October 21, 2025.

The High Court in Edinburgh was presented with evidence from the assault, detailing the severe injuries inflicted on Lindsay, which have led to permanent disfigurement. As the court heard about the events of the day, it was noted how alarming it was that another inmate appeared oblivious to the violence occurring just a few feet away while he played with a toddler. The incident raises serious concerns about prison safety and the measures in place to prevent such attacks, particularly during visiting times when conditions should be more controlled.

This attack not only brings into the spotlight the issues of inmate safety but also the implications for James McAvoy, who has publicly distanced himself from his half-brother. The connection to a high-profile celebrity adds a layer of media scrutiny to this case, potentially affecting both the reputations involved and the public's perception of prison safety protocols.