Rush and the team investigate the 1978 death of a teenage roller skater who was found in a ravine. A new witness emerges claiming to have information about the case, and the team must determine if it may or may not be true.
When a dying man with a long-standing vendetta puts a hit out on Josef, Mick discovers a secret his best friend has kept from Mick for over 40 years -- and the real reason Josef believes Mick and Beth can never work.
A seemingly perfect jewelry heist ends in murder and when crime scene evidence is stolen from the lab, Delko returns to find the culprit.
When Horatio's ex-girlfriend is killed in an explosion, the team looks within their own department to find the killer.