
The boy MUST die.
Game of Thrones Season 3, Episode 10

I'm afraid I MUST insist.
Game of Thrones Season 3, Episode 6

One of you MUST know one.
Game of Thrones Season 8, Episode 2

But first, you MUST
return my brother.
Vikings Season 1, Episode 7

Must seem like only yesterday.
Game of Thrones Season 3, Episode 4