After going public about the reopening of the Billy Halpern murder investigation, Detective Danny Smith receives a mysterious call from someone who claims to have insider knowledge about Billy's murder and other related homicides. This caller unveils the dark underbelly of the South Florida bodybuilding scene in the 1980s, centered around the infamous Apollo Gym, run by former Miami Dade police officer Gil Fernandez and his partner Bert Christie. The case takes an unexpected turn as new evidence comes to light, revealed by an unlikely source: one of the family members of the investigation's top suspects.