Caspar shows up late, after the restaurant is closed for the evening and he has returned from the city. The idea is to make a formal appearance, although a brief one. He is dressed more formally(see: nicely) than most, but that is often the case. Having come directly from work, everything about him is buttoned and tidy at first. As he makes his way through the house, from front to back, he can be spotted gradually undoing his cuffs or unbuttoning the fawn suede of his jacket.
Throughout the course of his stay, Caspar seems largely distracted, and spends most of the evening talking business on his phone out back.