![I tried to drag knife killer off Rob,' brother of stabbed Harry Potter actor tells jury | Daily Mail Online I tried to drag knife killer off Rob,' brother of stabbed Harry Potter actor tells jury | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2009/02/10/article-1140983-035F719E000005DC-730_233x423.jpg)
I tried to drag knife killer off Rob,' brother of stabbed Harry Potter actor tells jury | Daily Mail Online
![Harry Potter World on Twitter: "Robert (Rob) Knox has been murdered for 12 years now. He was 19 years old and played the role of Marcus Belby in Harry Potter. #harrypotter #harrypotterathome # Harry Potter World on Twitter: "Robert (Rob) Knox has been murdered for 12 years now. He was 19 years old and played the role of Marcus Belby in Harry Potter. #harrypotter #harrypotterathome #](https://pbs.twimg.com/media/EYyhzs6XYAESsrx.jpg)
Harry Potter World on Twitter: "Robert (Rob) Knox has been murdered for 12 years now. He was 19 years old and played the role of Marcus Belby in Harry Potter. #harrypotter #harrypotterathome #
![Harry Potter actor Rob Knox's mum finds happiness thanks to her son five years after his murder - Mirror Online Harry Potter actor Rob Knox's mum finds happiness thanks to her son five years after his murder - Mirror Online](https://i2-prod.mirror.co.uk/incoming/article2050571.ece/ALTERNATES/s615b/Sally-Knox-with-her-late-son-Rob.jpg)