Two bombings near Valentine's Day result in two deaths with no apparent connections. Brodie finds a way to get a confession from a drug dealer who conned a victim into playing Russian Roulette with a fully loaded gun. The Pembletons' marriage seems to be disintegrating in spite of therapy. Lewis and Cox wait outside an office where a third bomb has been delivered.

Chris Thormann must confront the fact that the assailant who shot and blinded him is up for parole, and he might get it. Pembleton and Bayliss investigate the murder of a chef, and the family's background of abuse triggers bad memories for Bayliss.