It's iron-clad.

Ladies and gentlemen of the jury... ...you will hear iron-clad proof of Richard Kimble's guilt.

Ladies and gentlemen of the jury... you will hear iron-clad proof of Richard Kimble's guilt.

And if she doesn't see it this way? Iron-clad prenup...

This guy's soul takes your place in hell and it's iron clad.

There are no signs the victim struggled and our only suspect has an iron-clad alibi.

I want to build an iron-clad case against this guy.

Yes, I've got someone watching. And yes, we have an iron-clad contract.

Nonetheless, it is impossible to establish an iron-clad distinction among which activities must be carried out by which organ.

Detective, our client-- Professor Hamilton-- has an iron-clad agreement with Passageway to have his body cryopreserved upon his death.