He is told to leave a window unlocked for another killer.

"I find window unlocked," announced the Japanese triumphantly, and withdrew, closing the aperture behind him.

Never leave doors or windows unlocked, and never hide a key to your house outside where it can be easily found.

In those instances where victims didn't leave doors or windows unlocked, there was no indication of how the killer gained entrance.

He wants his tinted window unlocked, so he can flash the face, but the lock is broken.

I told her not to leave her windows unlocked!

Someone had jimmied that window from the outside, to thrust the bomb through, only a few moments before Benholme had unlocked the door.

After all, she had found this window unlocked.

We didn't want to leave the window unlocked, you know?

It's convenient that he has no burglar alarm and left a window unlocked.