The Ontario Court of Appeal ruled that Yousanthan Youvarajah should face a second trial in the 2007 killing.
Youvarajah appealed that decision and the Supreme Court agreed to hear the case after an oral hearing today.
Youvarajah and a youth were charged in the death of a small-time drug dealer.
The youth implicated Youvarajah in a signed statement and was allowed to plead to a lesser charge.
At Youvarajah's trial, the youth changed his story and the trial judge ruled the signed statement was not reliable, leading to the acquittal.