An Eye for an Eye by William le Queux

Whatever might have been Mary's object in thus renewing my acquaintance at the very moment when I was about to seek her, one thing alone was apparent -- she feared the revelation of the tragic affair at Kensington. There are times when men and women, whatever mastery they may possess over their countenances, must involuntarily betray joy or fear in a manner unmistakable. Those sudden and entirely unintentional words of Dick's had, for the moment, frozen her heart. And yet it was incredible that she could have any connexion with this affair, so inexplicable that Superintendent Shaw, the chief of the Criminal Investigation Department at Scotland Yard, had himself visited the house, and, according to what Boyd had told me, had expressed himself utterly bewildered.

Next day passed uneventfully, but on the following afternoon we took train to Shepperton, where at the station we found Simpson, the chauffeur who had been at Shenley, awaiting us with a smart motor-car, in which we drove along the white winding road to Riverdene.