'Both a saga of tragedies and a detective story... Pale Rider is not just an excavation but a reimagining of the past' GuardianWith a death toll of between 50 and 100 million people and a global reach, the Spanish flu of 1918–1920 was the greatest human disaster, not only of the twentieth century, but possibly in all of recorded history. And yet, in our popular conception it exists largely as a footnote to World War I.In Pale Rider, Laura Spinney recounts the story of an over