When Martin Sidley lights the fire in the fireplace to please his girlfriend, the smoke returns to the living room and he calls the firemen. They find a charred body inside the chimney and summon the police and the CSI team. Nick and Sara arrive at the scene and remove the bricks, finding the body. David Phillips says that the victim is a male that was burned a few days ago. Then he finds a burnt plastic card and Nick discovers later that it belongs to Martin Sidley's son, Tad. Meanwhile, Catherine and Warrick recall that Martin was involved in the disappearance of the sixteen-year-old aspirant photographer Caroline Fitzgibbons, who is still missing. They use their warrant to investigate the previous case, and they find blood under a piece of wood withdrawn by Warrick. When they learn that Tad is alive and the blood belongs to Caroline, they proceed a different investigation with surprising results.
—Claudio Carvalho, Rio de Janeiro, Brazil