The CSIs investigate after a lawyer is killed at her son's wedding, but the case is compromised when the evidence is stolen.
Grissom and Catherine investigate when a woman's severed leg is discovered in a lake. They suspect both the husband and boyfriend of the woman's murder.
Sara and Greg investigate the deaths of two students, while Catherine's team looks at the body of a young man found in a crop circle.
Grissom probes a reported suicide at a construction site but he's convinced that the 'suicide' was homicide and uses theories on electrocution to find the killer.