Littlefinger's Trial & Execution (Death Scene) | Game of Thrones 7x07

Sansa Stark prosecutes Lord Petyr Baelish and Arya Stark carries out the execution. After Sansa outplays Littlefinger, Arya slits his throat with his own Valyrian steel dagger, Catspaw. Game of Thrones Season 7 Episode 7 'The Dragon and the Wolf'