There was a little downstairs door at the rear of the jail, to which Tharbel had the key.

And what of the thing or things that he had seen precede him through the downstairs door?

Rose figures out how to open the downstairs door, and finds herself on a set of steps leading down to a tunnel.

I'm going to use my skeleton key to open the downstairs door.

The downstairs door did not have a lock on it and they entered.

The downstairs door opened and an older woman stuck her head out.

She rushed to No. 18 and saw two grime-covered young women coming out of the downstairs door.

The downstairs door must also have been open, because I could hear the clatter of the harpsichord mechanism.

But no one hammered the downstairs door and cried, "In the name of the law!"

He must have made his way out one of the many downstairs doors.