The Red Window - Fergus Hume

Two former school friends, now both military men, meet again and discover both are trying to lose themselves to public gaze. Dick West has inherited the family estate, but is out of favor. "The Red Window" was used during periods of civil unrest to warn cavaliers of danger. Now, West awaits a message in the red window from his cousin, to say his grandfather has relented and forgiven him - but a handkerchief around the old man's neck complicates matters. - Summary by Lynne Thompson