have you looked at the trouser's next to the victim on the slab? get the sample analysed
and then take it to Brass

not sure where you are in the game but you need to find out that clair's father has a cat-
the same cat in which fibers are found on the vic's coat. find the coat outside the pawn
shop and analyse these fibers. then ask clair about the cat before taking the evidence to
brass. you should be able to get a warrant for clair's house. hope this helps and hasn't
made you even more confused than before :)