After bank robberies by thieves wearing Johnny Cash masks, Rush finds a link that may give new information on an old murder of a bank teller during an almost identical robbery.
When a drug case is reopened, Valens reveals he had worked undercover on the high-profile case, and now he must face the demons that have been haunting him for eight years.
Rush and her colleagues must solve a killer's demented puzzle and save a young boy's life. In one night, they are pushed to their wits' ends trying to crack the code.
Rush receives new evidence in the 1973 murder of a female college tennis phenomenon who beat the school's best male player in a high-profile match, but the suspect list is long.
Rush reinvestigates the shooting of an aspiring actor/singer who had gotten a part in a production of "Cabaret" but on opening night was shot to death outside the backstage door.
