Betrayals by Ian Callinan Boolarong Press, 2012, 348 pages, $24.95 To have heard Ian Callinan cross-examine when he was one of the nation’s leading silks or to have seen him sitting in judgment as a member of the High Court of Australia, no reader could have expected, even in his retirement, that he was susceptible to romance. But indeed, Betrayals, his seventh novel, is a love story. It is much else besides—a spy thriller, a study of politics and the public service, the world of academia and glimpses of war. But the abiding theme that courses through the novel is…