three o'clock
She is being watched with extraordinary care , in connection with some affair of which I must confess that I know nothing . She is staying in London , a city which I happen to know she detests , without any ostensible reason . Of all parts , she has chosen Battersea as a place of residence . It is her companion whom I saw leaving your flat at three o'clock on the morning of Barnes ' murder . I am bound to say , Wrayson , that I find these facts interesting . '' `` Why have you come to me ? '' Wrayson asked .