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A few minutes later the man was at her door.

Would we want to simply show up at their door?

I had only put the phone down two minutes before, and now he was at my door.

Do you think I want your death at my door?

Early the next morning he turned up at her door.

She always seemed to know who was at her door.

But half an hour later I was back at her door.

At her front door she called out in a clear voice.

We were at its door when a man called out behind us.

Maybe she'd even find them at her door one night when she came home.