this poor Stipp bloke screamed at his wife to get away from the window and the balcony..
he noticed someone was moving in Oscars bathroom.. from right to left.. the light was on. they discussed between the, his wife and he , should they go and see what was going on?? in case children were involved?? they decided yes.. so he got dressed, he was in his pyjamas , I think. a correct sort of British heritage guy.. he gets dressed, he goes over the road.. carefully, I imagine.. he still doesn't know who owns the house, or who is in it.
he is a doctor,..of radiology as a speciality . Makes sense he would go over.