Author Patrick Radden Keefe. | Lars van der Brink In September, 2015, Patrick Radden Keefe wrote about Ken Dornstein, whose older brother David had perished in Pan Am Flight 103 which had exploded mid-air, six miles above the earth. The debris fell over Lockerbie, Scotland. Over many decades, Ken kept trying to solve the murder mystery of his brother’s death. Who was responsible?If a writer’s career is a sum of its parts, then all of Patrick Radden Keefe’s career has led to London Falling, his most recent non-fiction book. Ostensibly about the death of a teenager, Zac Brettler, in 2019,...