Just then, behind me, a key turned in the door lock.

He almost broke the key getting it into the door lock.

By the way, the door locks when I close it.

The door lock worked more easily than it used to.

For anyone with his mechanical knowledge, the door lock was easy.

I'll check your window and door locks on my way out.

Had the same sort of device been used on the door locks?

You can raise or lower the top by turning the key in the door lock.

Used it to break the window glass, low down and on the left, close to the door lock.

It stopped just as quickly at the sound of a key going into the door lock.