As Horatio investigates the murder of a suspected drug lord, he must also search for the truth when a member of his team is busted for drugs. The team is stunned when Delko is busted for purchasing marijuana. However, as the truth as to why becomes clearer, Horatio must fight to keep Delko at CSI. Meanwhile, after a suspected drug lord is gunned down in his home, evidence leads the CSI’s to a dirty bounty hunter whose greed may have gotten in the way of bringing a criminal to justice.