Don't Open

SMS came: "Don't open".
Immediately someone rang the doorbell. It seemed like an introduction for a bad horror - but Vlad has gone cold inside.
 "Are you stuck to the sofa?" screamed wife.
“Again the sectarians,” answered Vlad. "We aren't waiting for anyone. Listen, don't open, please."
"Fucking fatten lubber! I myself!"
Vlad was ahead of her for a split second: fear gathered him into a spring.
The door opened and closed. Vlad realized that he was already on the other side of it - in the dirty hall. He battered the bell. 
Unknown man opened the door.
"What are you about?"