Burked

A gardener, outside the house, observes Tony Braun, a known drug addict and old-time Vegas casino mogul (i.e., with suggested mafia ties), face down in his house and, judging by the paraphernalia surrounding the body, the apparent cause of death is a drug overdose. However, once the investigation begins, Grissom detects evidence of duct tape on the body, which leads the CSIs to believe that the victim was restrained and forced to ingest lethal amounts of drugs.