A fun and games thriller, “The Other Woman” turns on intrigue about Russian espionage, and links present-day Russian attempts to sabotage Western democracies to the machinations years ago by, arguably, the most notorious double agent of the 20th century – the head of Britain’s intelligence service, MI6, Kim Philby. In fact, it’s now exactly 30 years since the unrepentant Philby died, in Moscow, having fled there in 1963 once he was identified as a member of the infamous British spy ring, The Cambridge Five. Silva says that Philby has been an obsession of his “for a very long time.” But how does all this historical espionage relate to Silva’s long-time returning protagonist Gabriel Allon? Allon, a legendary art restorer, and now a man of late middle age, is making his unassuming way around a Rubens exhibition, when he first appears in chapter 2. It seems that the old spymaster messed up in not protecting a Russian defector from a Russian hit job. And so he gets drawn into current events