body: In other words. if some evidence (but not conclusive) exists of somebody else comitting a crime, can a defence lawyer use this when representing their client?
  For instance, in the Glen Sebastian Burns and Atif Ahmad Rafay case, where the two were accused of murdering the latter's parents, there was an FBI informant that had told the police that Islamic fundamentalists may have been responsible, although the police did not pursue this line of inquiry. Could a defence lawyer raise something like that in court?
  
  
  
title: Can a criminal defence lawyer talk about the possible guilt of other suspects when defending their client?