Aamir Siddiqi: Jason Richards denies murdering 17-year-old
12 December 2012 Last updated at 19:17 GMT
A drug user has denied brutally stabbing to death a promising student in the doorway of his home in a bungled contract killing.
Jason Richards told Swansea Crown Court he did not murder Aamir Siddiqi, 17, and also denies trying to murder his parents who tried to protect their son.
Mr Richards, 38, who has a string of previous convictions, told the jury he used drugs to "just get by".
Ben Hope, 39, also denies murder and attempted murder.
Nick Palit reports.