Chapter V.—The Avenging Angel.MASON returned to London on the Sunday evening in a decidedly unpleasant frame of mind, and was so irritable in the office the next day that even his long-suffering staff found it most difficult to put up with him. He continued in that mood upon the succeeding days. Then on the Thursday he received a further report from the enquiry agent, Turnbull, and it made him more savage than ever, for it contained a snapshot, taken the previous day, of Larose and Todhunter apparently in earnest conversation together. The snap had been taken from behind a tree in a lane adjoining the Hilary property. The report was not a long one and consisted mostly of gossip which the villagers had picked up from the servants at the Hall. Mr. and Mrs. Larose had prolonged their week-e