The Stark sisters are back at Winterfell seemingly still contemplating killing each other. At least that's what Littlefinger is betting on when Sansa calls Arya into the Great Hall and appears to be poised to sentence her to death. Then. the sisters show their hand when Sansa tells Littlefinger he's the one who stands accused of betraying their father, attempting to murder their brother, and bringing all manner of destruction down on House Stark. A shocked Littlefinger pleads for his life, but Sansa sentences him to death, and Arya carries out the execution by slicing his throat.
Later, Arya and Sansa bond over their teamwork as they await Jon's return to Winterfell with the Dragon Queen.