In the thrilling new novel by the "New York Times" bestselling author of "An Incomplete Revenge," Maisie Dobbs must catch a madman before he commits murder on an unimaginable scaleIt's Christmas Eve 1931. On the way to see a client, Maisie Dobbs witnesses a man commit suicide on a busy London street. The following day, the prime minister's office receives a letter threatening a massive loss of life if certain demands are not met--and the writer mentions...