Game of Thrones Season 6 Episode 07 The Broken Man
Jaime and Bronn arrive at Riverrun and see Lothar Frey and Walder Rivers attempt to coerce the Blackfish into surrendering the castle by threatening to execute his nephew Edmure Tully. The Blackfish calls their bluff and refuses to surrender.
LOTHAR FREY: Come out and fight us, Blackfish. We have Lord Edmure. Yield the castle or we’ll hang him. This is your last warning. Yield the castle.
WALDER RIVERS: You think I won’t do it, old man? I sliced your niece’s throat from ear to ear. And where were you? Running and hiding like a fucking coward. Yield the castle or I cut his throat.
BLACKFISH: Go on, then. Cut his throat.
Source text: Wikipedia.