An IRS agent is killed while trying to repossess a delinquent taxpayer's yacht. Soon after, the CSIs discover a second IRS agent shot to death. Zac Efron guests.
Horatio's life is changed forever when he learns important details about his deceased brother, and the team investigates when a woman is murdered at a crowded bar.
An extreme skateboarder and video game tester is killed and the team must enter the highly competitive world of video game programmers and testers to find the culprit.
As Delko hovers between life and death, he experiences a flashback to 1997.