10 o'clock
`` Yes , sir , '' Carthew replied , with a calmness to match his employer 's . `` As I was coming here from the garage I met the mistress . She was looking for a taxi and she took me . '' `` But did you tell her that I asked you to be here at 10 o'clock ? '' `` No , sir . '' `` Did you tell her that I was in London ? '' `` No , sir . ''