A woman asks Lilly to investigate the murder of her fiancé's first wife and points a finger at an inmate serving time for an unrelated crime.
Rush reopens a cold case after an excavation unearths the remains of a man and a woman who were reported as missing in 1969.
While at a colleague's wedding, the team tries to determine if the bride was responsible for her former fiancé's death.
The team search for a dangerous serial bomber who hit the wrong target in their recent attack, and whose previous three bombings blinded a man and killed two others.
The team investigates when a former drug addict insists she saw her son in a park, three years after he allegedly died in an apartment fire.