The riddles involve a Chaucer poem that Reid’s mother used to read to him, establishing a deeply personal link to the case. ⚠️ The Cliffhanger

The Unsub successfully hacks Garcia's personal computer, using her files to gain intimate knowledge of the team's lives and home addresses.

Watch a reaction to the intense events of the season finale: 🎵 Featured Music

The investigation leads the team to Frank Giles, but they find him dead—another pawn in the Unsub's game.

The episode ends on a major high-stakes note: is shot in her own home by the Unsub, who uses her blood to write "RULES" on the wall.