What does “that's that” mean?

used to say that your decision cannot be changed

How is “that's that” used?

In My Fellow Americans (1996), one line is: “Kramer? Then that's that. Cased closed.”

The clip at the top of this page is from My Fellow Americans (1996).

Kramer? Then that's that. Cased closed.

8 作品で登場 · 1 本目