CBS

Season 10: Episode 11 - Sin City Blue

Sin City Blue: Two beautiful women are murdered in a Las Vegas hotel by an unexpected killer, an accountant. He was the victim of a scam and murder was his revenge. The investigation starts with the dead body of a beautiful blonde in a hotel hallway. Everyone on the floor is questioned, but the leads go nowhere. Little by little the CSIs uncover the fact that she was working with another girl as con artitsts. They would seduce unsuspecting men in the hotels on the strip, then take their ATM cards and clean out their bank accounts. But this con went sideways, and the guy they tried to rip off got his revenge. He killed one of the girls in her hotel room, and the second girl tried to cover it up and go after him for one last con. When she boldly went back to his hotel room, he overpowered her. In the mean time, Langston continues to track Dr Jekyll. A case presents itself that feels like it might be Dr Jekyll's work only to find out that it was just a hack doctor helping poor people who cannot get medical attention.