Mac believes he can fight the internal affairs investigation that is about to be started against him because of what happened to Clay Dobson. Can Mac explain what happened to the suspect he was chasing and will it be good enough for him to keep his job? Also Stella could lose her job as a CSI after a cold case is somehow connected to her.

Can the team clear a tennis legend of murder? Also Mac believes that the continuing investigation into what happened with Clay Dobson is nothing but media pressure. Can friends and colleagues help save Mac Taylor’s career before it’s too late?

After a series of heists in the city (one including Det. Chief Sinclair's house) one of the "super spies" involved is robbed of his life. The team works to solve the robberies and the murder, as both are obviously connected.

While in Chicago Mac uncovers more clues about his stalker and reveals his troubled past. Meanwhile, in New York the rest of the team is in danger. The hunt is on to figure out the identity of the 333 stalker before time runs out.

The team investigates the puzzling death of a woman named Ann Steele. To solve the case, the team must look for a life size silicone doll. When the team runs into the factory that makes them, it prompts some amusement for some of the team.

Meanwhile, Hawkes meets up with an old college friend who later asks him to compromise some evidence in the case.

When a man falls 20 stories to his death, and his body goes missing after it hits the ground, with no body to process, the CSI's must treat this strange development as a missing persons case.

Incriminating DNA evidence contradicts the confession of a scorned woman claiming to have brutally murdered her cheating husband.