The CSIs investigate the mysterious death of a competitive eating contestant, and Chavez partners with Allie to prove where the mysterious silver ink notes have been coming from.

When the body of a young girl who was killed over 40 years ago is discovered at the bottom of Lake Mead, Max Roby promises her mother, Raquel Williams, that the CSI team will finally find justice for her daughter. Also, Greg Sanders brings his quirky humor as he returns to the crime lab.

The CSI team investigates a bomb that detonated during a masquerade party for wealthy investors at the site of a new casino.

When wrongly accused former suspect Gene Farrow enters the Crime Lab covered in blood, wielding a cleaver and looking for Allie Rajan, the CSI team investigates his peculiar story about a macabre party with a fatal ending.

The CSI team investigates a case where an ambitious investigative reporter is found dead at a peanut factory. Also, everyone in the crime lab buzzes over who Max will promote to day shift supervisor.

The CSI team investigates a murder case that hits close to home for Folsom. When he is forced to sit this investigation out, he does his own digging with help from Trey. Worried Folsom will do something he regrets if he gets his hands on the killer, the team find themselves racing to arrest the suspect first.

With their respected colleague Josh Folsom under arrest for the death of Kahn Schefter – the man responsible for killing Folsom’s mother – the CSI team combs through every crumb of forensic evidence to determine his innocence or guilt.

As the CSI team investigates the death of a man visiting Las Vegas for a health and wellness convention, a fiery explosion traps Allie Rajan in the basement of an abandoned hospital.

When a fitness guru is found dead in a gym sauna and his soon to be son-in-law is found dead from an apparent hunting accident, the CSI team investigates to see if these deaths are unrelated tragic accidents or if they're connected.

The CSI team investigates when a plastinated nervous system is found hanging above a local car dealership. Also, Chavez and Max search for a missing source in their ongoing investigation of the robotics factory.