"I suppose you know you're the single prisoner to escape," the admiral said.

The death of a single prisoner in Group 4 custody has rightly made headlines.

They cannot be trusted to guard a single wounded prisoner!

I do not have a single prisoner to reproach myself with.

Most of my men are dead, and we don't have a single prisoner to show for it.

He had expected excitement but they had not brought out a single prisoner yet.

Up to 10 men were kept in one cell built for a single prisoner, and their legs eventually became paralyzed.

Conditions are cramped, with three inmates sharing a cell designed to house a single prisoner.

We were not allowed to be alone with a single prisoner for a single moment.

He's probably the single most secure prisoner Starfleet has ever had.