Spaced

You drop the controller onto the floor.
"Alright," you say, "I'll go see what the bastard's up to."
You get up and walk from the silent carpeted floor of your apartment and onto the loud stone floor of the hall outside. You close the door over behind you and make your way down to Brian's appartment, your footsteps falling in an almost irritating rhythm.
Number 16 finally comes close and you knock on the door. Surprisingly, you can't hear any noises coming from Brian's flat. Maybe Daisy was just hearing things...
Brian isn't answering. Maybe he's out. You knock again.
"Brian, you in there? It's me. Open up."
Nothing.
You turn to walk away, but then a thought hits you. What if Daisy did hear noises? What if he's hurt, or unconcious? What then?