German goods are cleared from the shelves at Selfridges. Even poor Heidi gets the heave-ho, despite the fact that the book is set in neutral Switzerland. The store’s new emphasis is on British-made merchandise. Inspired by this policy, Mr. Thackeray chastises Henri for wearing a homburg hat and German-made shoes. Little does Henri realize that this is the least of his problems with Thackeray.
Bill Summertime, the mysterious card player from the last episode, pays Harry a visit and asks him to go to Germany on an intelligence-gathering mission for the British Secret Service. As an American, Harry can travel freely, and his business contacts in Germany provide a cover for spying. Shocked and intrigued, but noncommittal, Harry gets Delphine’s assurance that her friend Summertime is “for real.” Harry hasn’t noticed, but Delphine is on her own secret mission to steal him away from Rose. “I know what makes Harry Selfridge tick,” she says to an associate.
Victor and Agnes go to a variety show with Josie and Florian, where they hear music hall tenor Richard Chapman sing one of the hit songs of the era, “Let’s All Go Down the Strand.” Backstage, Chapman is met by his former fellow performer, Lady Mae, who asks him to headline an upcoming charity concert at Selfridges. Later, at the store, Josie offers Florian’s services as an accompanist for the event, which delights Mr. Crabb and Mr. Grove, who are under the impression that Josie’s musician lodger is a woman.
Meanwhile, Thackeray tells Grove that Henri is behaving like a German spy. Grove is dismissive of the charges but questions Henri anyway. The Frenchman acts insulted and patriotically announces he is resigning to join the French army. Victor is also resigning—to take over his uncle’s restaurant. On impulse, he asks Agnes to marry him and join the enterprise. She doesn’t need to think about it: “Yes!” she says immediately.
Having had great success getting kickbacks for military leather contracts, Lord Loxley has moved on to felt. Harry, who knows nothing of the bribery scheme, refuses to give Loxley a list of suppliers as he innocently did with leather merchants. The shifty lord imperiously accuses Harry of doing nothing for the war effort. The charge is unfounded, but it stings and prompts Harry to accept Summertime’s secret mission.
All plot strands converge at the charity concert: Grove is scandalized to see that Josie’s violinist is a handsome young man. Harry arrives to find that Summertime is waiting at his office, where he learns that fast-breaking developments require him to leave immediately for Germany. Delphine sees Harry depart, giving him a meaningful kiss on the cheek. Chapman and Mae lead the audience in a rousing rendition of “It’s a Long Way to Tipperary.” And while Chapman intones the doleful strains of “Danny Boy,” police arrive to arrest Henri for espionage. What a show!