Hal soon walked the distance, and, getting out his night-key, he let himself in.
It was two o'clock when Theodore applied his own night-key and entered his front door.
Like the other male occupants of the house, the lieutenant was provided with a night-key.
Our nation often seems like a householder who has given his night-key to an enemy who has threatened his home with firebrands.
I'd give him a 'night-key,' and be perfectly oblivious what time in the small hours he tumbled into the front entry.