throw yourself on somebody's mercy
throw oneself on mercy of someone

Maybe I would tell him the truth, and throw myself on his mercy.

He made up his mind to throw himself on her mercy.

Why don't I just throw myself on the mercy of the court?

Which threw me on the mercy of R4 even more.

Why would he choose, now, to throw his daughter on our mercy?

"I will tell all and throw myself on your mercy."

You throw yourself on their mercy, which is what I'm doing.

"Then I throw myself on the mercy of the court."

I'm willing to throw myself on the mercy of the public.

"About to throw yourself on the mercy of the court?"