The Shadow of the Past by Ethel Mills

There was a task which, when he had little knowledge of the nearness and the overwhelming nature of the tragedy that had since befallen, Matheson had allocated to himself with every intention of going through with it; the task included fixing the guilt of incitement to rebellion on to Holman. He meant to bring Holman to account for his treachery.

Amid the hurried preparations for his wedding, which was to precede his enlistment for Home service, he had no thought of evading this task. It was inconvenient at the moment to give his time to outside matters; but the tracking down of this man -- this German spy who for years had been fostering a spirit of hatred among the Boers to the end that these people whom his country was deluding would, when the hour struck, serve his country to their own undoing -- the confronting him with his treachery and the bringing of him to justice was a matter of vital importance to him. In his desire to punish Holman he was moved primarily by resentment, fierce, bitter resentment that was mainly concerned with Honor, with the pernicious effect of this mischievous doctrine upon Honor's warm responsive nature.