As Europe erupts into war, Jack McColl, a spy for His Majesty's Secret Service, is stationed in India, charged with defending the Empire against Bengali terrorists and their German allies. Belgium, he finds, is not the only country seeking to expel an invader. In England, meanwhile, suffragette journalist Caitlin Hanley begins the business of rebuilding her life after the execution of her brother - an IRA sympathizer whose terrorist plot was foiled by Caitlin's own ex-lover, the very same Jack McColl.