When a small plane crashes on a beach and the pilot dies, it seems that the aircraft may have been sabotaged, with suspicions turning towards the victim's neighbours.
A security guard is found dead after shots are fired at a rap concert. Rapper 10-Large won't talk to the police, but evidence suggests that his bodyguard was the target.
Horatio suspects a sniper is responsible when three people are shot during rush hour. But the team are puzzled when the evidence on a fourth victim doesn't match up.
A cop is murdered in unexplained circumstances and Horatio becomes suspicious when Internal Affairs get involved, leading him to believe that this wasn't a random crime.