It was Victor's first day back in the field and it had all gone smoothly enough. When they returned to the station house, Michael went to grab some doughnuts from the staff room and Victor continued on to the office they shared.
It was occupied by someone he didn't recognise, sitting behind Michael's computer. "Er...hello. Detective Brannigan. May I help you?" he asked, utterly confused. Members of the public usually couldn't just walk in here, so he figured the man was someone from a different station.