Game of Thrones:

Cersei speaking to Jamie: "Did you never wonder why your sister had such a change of heart from the girl you knew we you were young? Oh, dear brother, you played your part so well. You laid with me to produce my offspring, an heir to the throne. You became the Kingslayer removing my first obstacle. Did you never wonder why you've never heard of a woman White Walker? Its because we're not white and frozen like our men kindred. We look like your kind, dear 'brother', and you allowed one of us to look like you too with our son. How else could we, far beyond the wall, in the Lands of the Always Winter, ever hope to take Westeros? It needed to be in a shambles down here. I didn't count on you not being able to protect him though, Kingslayer. Still, look around you! Do you like my 'shambles'? Don't be upset. You were in love you silly boy, and I used that to my full advantage to distract all your attention from my real brothers taking the North before they come here. I feel them even now putting an end to mankind's only real hope, the defenders of Winterfell. Here, where there will be no defense for the world of men."

Jamie, in a moment of anger realizing the betrayal, takes his sword and runs Cersei through!

Cersei screams frozen in pain! At the same time in the north at the height of Battle of Winterfell the White Walkers and armies of the undead, psychically linked to Cersei, all freeze in pain feeling Cersei's death, and in that stunned moment, a weaponless desperate John Snow jumps on the Night Kings sword impaling himself, but allowing Arya Stark the chance to leap over the entangled Night King/John Snow and make a fatal slash with her Valerian Steel dagger. The Night King explodes in shards.

After a beat, we see a Jamie kneeling before a non-crazy Daenerys. He hands her his sword.

Jamie: "End this. End my foolish bloodline and wipe away the stain we Lanisters have left on Westeros for far too long."

Daenerys: "You have been a fool, Jamie Lanister, but you do not deserve an honorable death for your deeds, but I as your Queen agree you do need to die. Dracarys!"