a theory...?
sebastien giroux and bernard cherfan being murdered so recently is it possible that someone in OC already knew that silva had flipped?
there has been mention that cherfan helped hide silva when he was on the run and possibly hired him out for "work"
cherfan looks to have been a link to the mafia by way of stefano sollecito.

sollecito is ruthless that much has been established if we are to believe the litany of murders andrea scoppa pinned on him in his book.
also the police in MTL (and canada in general) are not above corruption of any kind. the MTL police have a history of officers dealing with the mafia.

the giroux murder to me is more puzzling.
i'm sure it will not take long to find out.