The secret city (worldwide Classics) - Hugh Walpole - Bog

In the POCKET CLASSICS series, this novel is the story of John Durward who meets Henry Bohun when the latter lodges with Nicholas and Vera Petrovich and Vera's sister Nina. Vera encourages Bohun's interest in Nina who longs to leave home. Uncle Semyonov turns up with a sense of impending trouble, while in Petrograd the revolution threatens.