who killed the starks at the red wedding
The Rains of Castamere Catelyn notices Roose Bolton wearing chainmail under his robes which confirms Catelyn's suspicions that they have been betrayed. Just as Walder signals his men to attack the Starks' men, Catelyn tries to warn Robb, but before he can react, Lothar repeatedly stabs the pregnant Talisa in the stomach, killing her and her unborn child. As he tries to draw his sword, Robb is shot by crossbows, and the massacre of his bannermen begins. Arya, having snuck past the gate, witnesses Frey men kill Stark soldiers and Robb's direwolf, Grey Wind. She is saved by the Hound, who knocks her unconscious and carries her out of the castle. Catelyn, although wounded by a crossbow bolt, holds Walder's young wife, Joyeuse, hostage with a knife and demands that Robb be allowed to leave. Walder refuses, and Roose Bolton stabs Robb in the heart, delivering Jaime's message from Harrenhal, "The Lannisters send their regards." Catelyn screams and kills Joyeuse in retaliation, before Frey's son Black Walder cuts Catelyn's throat.