<P> Although his character does not appear in the seventh novel, Knox had signed on to reprise his role as Marcus in the final installment of the Harry Potter film series, Harry Potter and the Deathly Hallows . The film was divided into two parts for financial and scripting reasons; Part 1 was released in November 2010, with the second part in July 2011 . </P> <P> Knox died at the age of 18 after he was stabbed outside the Metro Bar in Sidcup, South East London, on 24 May 2008 . He had intervened in a fight to protect his 17 - year - old brother Jamie, who was being threatened by two men, one of whom was armed with two knives . Warner Bros. released a statement concerning his death: "We are all shocked and saddened by this news and at this time our sympathies are with his family". </P> <P> Karl Norman Bishop (born 1987 in Lewisham, Southeast London), from Carlton Road, Sidcup, was charged with the murder . He was taken into custody, and remained there until his trial, which began in February 2009 . Bishop was found guilty of murder on 4 March 2009, and received a life sentence with a minimum of twenty years before being considered for parole . Police reported that he showed no remorse for the crime . </P> <Table> <Tr> <Th_colspan="4"> Film </Th> </Tr> <Tr> <Th> Year </Th> <Th> Film </Th> <Th> Role </Th> <Th> Notes </Th> </Tr> <Tr> <Td> </Td> <Td> King Arthur </Td> <Td> extra </Td> <Td> Uncredited </Td> </Tr> <Tr> <Td> 2009 </Td> <Td> Harry Potter and the Half - Blood Prince </Td> <Td> Marcus Belby </Td> <Td> Released posthumously (final film role) </Td> </Tr> <Tr> <Th_colspan="4"> Television </Th> </Tr> <Tr> <Th> Year </Th> <Th> Title </Th> <Th> Role </Th> <Th> Notes </Th> </Tr> <Tr> <Td> </Td> <Td> The Bill </Td> <Td> Unknown </Td> <Td> 1 episode </Td> </Tr> <Tr> <Td> </Td> <Td> Trust me I'm a Teenager </Td> <Td> Himself </Td> <Td> </Td> </Tr> <Tr> <Td> 2007 </Td> <Td> After You've Gone </Td> <Td> Josh </Td> <Td> (2 episodes) </Td> </Tr> </Table>

Harry potter actor who died in real life