Read the first short story in Peter M. Ball's Seraphim Plague series, One Saturday Night, With Angel (also available in the short story collection Not Quite The End Of The World Just Yet).

There's an angel perched on the Nite Owl roof when Mike shows up for the graveyard shift. He thinks it's the same angel whose been following him for a week. Everybody thinks Mike's going to be purged before morning, Elvis and all the other regulars are telling him so.

But Mike figures he's lasted six days without pissing the angel off. With luck, he can make it seven and they'll find some other victim...