Reckoned he'd come to fix the electric, that I had been phoned about it. But there is a buzzer system to get into the flats here, why was that not rung? No attempts to knock, just the sound of someone trying (and failing) to get key in lock. He had no id, just a map of the area. Now I'm too scared to go out, has he really got keys for our flat, or was he trying the wrong door?