Calleigh is run off of the road in to a canal and causes freshly collected evidence to be compromised. The team must work to find new evidence, as most of the water-damaged evidence is unusable.

After a young woman is found dead shortly after she was auctioned off for charity, the team finds that the woman was trying to uncover the true nature of the event’s host. As the team delves deeper into the investigation they soon discover a larger plot that could put Miami in danger.

After Nick is found to have been killed with all the evidence pointing to Natalia as the killer the rest of the team has been sidelined by the Internal Affairs investigation. Horatio with the help of the night shift lab and Calleigh’s ex-boyfriend have to find the evidence to clear Natalia.

There's a serial killer on the loose marking all of his victims with a Y on their chests and one or more of the csi's lives are in danger in this season 5 finale

When the team is investigating the murder of a probation officer and a hostage situation, Horatio learns that the main suspect could be his son.

The team investigates the puzzling death of a student and find evidence that Tim Speedle may not be dead.

The murder investigation of a sports legend has complications when his body is lost by the lab.

Strange events begin to happen as the CSI team tracks down a serial killer who killed during a solar eclipse.

The evidence on who shot Horatio leads the team to some of most Miami's dangerous including one of their own.

A seemingly perfect jewelry heist ends in murder and when crime scene evidence is stolen from the lab, and Delko returns to find the culprit.