Résumé: Tannhauser and Volz continue to follow the trail of the now mythical Iron Ghost. New clues lead them to a German airfield on the Russian front line where the Germans are pinned between a Russian air strike and the ground onslaught from the Ghost himself. What do two modified .45 caliber handguns and a red monocle mean to our detectives, and who does it point to for their first arrest in the case?