Duty vs. Personal Feeling

Characters struggle to reconcile their patriotic or professional duties with personal emotions, as seen in von Belke's conflicted feelings for Eileen and Blacklock's romantic interest in her while executing his mission.

Von Belke struggles with despair but forces himself to focus on his mission, weighing personal safety against national duty.

Mr. Drummond is torn between his desire to share the news with his wife and his duty to keep silent for the country's sake.

Von Belke's moral revulsion clashes with Tiel's pragmatic view of duty, leading to a tense argument.

Von Belke struggles between his duty to rejoin his ship and Tiel's request to stay for the larger espionage scheme.