We must have these fellows locked up and out of harm's way.
They had locked, of course, when the Y-shield went down.
The back door was locked, of course, but that was no problem.
The door to the corridor had been locked, of course.
He had carefully and painfully locked away that part of him.
The doors were locked from inside, of course, by means of a hook and eye.
The door to this room was locked, of course.
Scott's eyes locked on the man's, a sudden sense of awareness washing over him.
It was locked, of course, but it wouldn't hurt to check anyway.
He tried the handle, for reassurance; the door was locked, of course.