(A while later. (Booth and Brennan follow after the court officer.) ANGELA: No. BRENNAN: So, the next victim is a corrupter. BRENNAN: Zack is right, the victims patella's were removed surgically. Brennan and Booth walking down the stairs that lead to the basement of the Jeffersonian in the dark.) But jumps into the water. Dr. Sweets? He's scared to death of jail. I believe he may have been a nephew. On the telephone. SWEETS: The serial killer? The team is gathered trying to put the pieces together in the Gormogon case.) ZACK: (on phone) Who's that?
Plan: A: a priest; Q: Whose death led Booth and Brennan back to the Gormogon serial killer? A: the Gormogon serial killer; Q: What case did Booth and Brennan's investigation lead them back to? A: the priest's kneecaps; Q: What was removed from the priest? A: victims; Q: What does the Gormogon serial killer have a pattern for choosing? A: the evidence vault; Q: Where did Angela find a victim tree? A: The team; Q: Who attempts to make predictions on who the next victim is? A: Dr. Sweets; Q: Who provides psychological insights into the killer for Brennan and Booth? A: Brennan's brother; Q: Who reappears in the Gormogon case? Summary: Booth and Brennan's investigation into the death of a priest leads them back on the case of the Gormogon serial killer when the priest's kneecaps were discovered to have been surgically removed. They realize the killer has a pattern for choosing victims after Angela finds a victim tree in the evidence vault. The team attempts to make predictions on who the next victim is while Dr. Sweets provides psychological insights into the killer for Brennan and Booth. Meanwhile, Brennan's brother reappears.