**From the *New York Times* bestselling author of *A Legacy of Spies.* John le Carre's new novel, *Agent Running in the Field* , is coming October 2019.** Over the course of his seemingly irreproachable life, Magnus Pym has been all things to all people: a devoted family man, a trusted colleague, a loyal friend--and the perfect spy. But in the wake of his estranged father's death, Magnus vanishes, and the British Secret Service is up in arms. Is it grief, or is the reason for his disappearance more sinister? And who is the mysterious man with the sad moustache who also seems to be looking for Magnus? In *A Perfect Spy* , John le Carre has crafted one of his crowning masterpieces, interweaving a moving and unusual coming-of-age story with a morally tangled chronicle of modern espionage