When a badly decomposed body found is an abandoned car on a rooftop, Mac and his team must go up against a killer who is using the parents of his victims to manipulate crime scenes.

When a tractor-trailer carrying exclusive party guests mysteriously ends up at the bottom of the Hudson River, the CSIs must solve the mystery from the soggy remains.

After a hail of gunfire tears through the crime lab, Mac and his ex-partner become part of a vendetta 17 years in the making.

When the body of a beautiful young woman is found in a stolen Ferrari, the investigation leads to a family of car thieves, but the CSIs must find the murderer before the rest of the family meets the same fate.

A charred body turns into a hot mess for the CSIs when it appears a cage fighter has been murdered by his stalker.

The CSIs rush to stop serial arsonist Leonard Brooks after he begins using fire against people from his dark past.

When Det. Lovato's cover is inadvertently blown, the CSI's investigate the Latin street gang she infiltrated when undercover.

On Valentine's Day, Mac and the team tackle three twisted tales of love gone wrong.