The CSIs dig to find the truth about how a recent shootout at a gun store might connect to a young woman who may have committed suicide.

The CSI unit investigates when Frank, an apparent murder victim, sits up and needs help but is he just another victim?

Three new murders related to three unsolved (or incorrectly solved) crimes from the past come back to haunt the CSIs.

The CSI team investigates a fire at a music venue that leaves four people dead, including two band members.

When a woman is found dead in Mexico and a murdered couple is discovered in a driveway, evidence from one investigation could help the other.