Karl Bishop

- 21 years old at the time of the arrest
- Stabbed Knox and several of his friendsThe Guardian: Man found guilty of murdering Harry Potter actor (March 4, 2009)
- Five other people were injured in the attackBBC: Man guilty of Potter actor murder (March 4, 2009)
- Charged with one count of murder and five counts of wounding with intent
- Found guilty of murdering Knox on March 4, 2009The Guardian: Man found guilty of murdering Harry Potter actor (March 4, 2009)
- Sentenced to minimum 20 years in jail
- Was expelled from school and began getting into trouble with police at the age of 14BBC: Man guilty of Potter actor murder (March 4, 2009)
- Had gotten into a fight with Knox and his friends a week before the stabbing incidentBBC: Man guilty of Potter actor murder (March 4, 2009)
- Harassed a girl the night of the stabbingBBC: Man guilty of Potter actor murder (March 4, 2009)
- Knox's friends came outside and surrounded Bishop when they heard about the harassmentBBC: Man guilty of Potter actor murder (March 4, 2009)
- Knox came outside to protect his brother, after he heard Knox had threatened himDaily Mail: Police blunders left knife thug free to murder Harry Potter actor Rob Knox (March 4, 2009)
- Bishop stabbed Knox and the others several timesBBC: Man guilty of Potter actor murder (March 4, 2009)
- Was reported to police for an attempted knifepoint robbery two months earlier but was not arrestedDaily Mail: Police blunders left knife thug free to murder Harry Potter actor Rob Knox (March 4, 2009)

22-year-old Karl Bishop was found guilty on March 4, 2009 of murdering 18-year-old actor Rob Knox in May, 2008 by stabbing him to death outside a bar in London. Five other were people injured in the attack. On March 5, 2009, Bishop was sentenced to a minimum 20 years in jail.The Guardian: Man found guilty of murdering Harry Potter actor (March 4, 2009)Herald: Karl Bishop, who stabbed... (March 5, 2009) Knox had a minor role in the upcoming movie Harry Potter and the Half-Blood Prince.
Rob Knox

18-year-old actor Rob Knox died just days after filming his last scenes for the upcoming movie Harry Potter and the Half-Blood Prince. Knox played Ravenclaw student Marcus Belby in the film, which will be released in the summer of 2009.