Bauerstein, now, what was he doing up and 91 dressed at that hour in the morning? 
There was no reason for Bauerstein to be up so early, especially in his old age. 
mnli hypothesis: There was no reason for Bauerstein to be up so early, especially in his old age.  premise: Bauerstein, now, what was he doing up and 91 dressed at that hour in the morning? 