If you're trying to solve the Newsday crossword and you got stuck on the clue Sagan book whose Chapter Nine is ''Tails'' then you're in the right place! We've been working hard on this Newsday crossword puzzle, and after gathering all of the other hints and relevant information concerning the clue Sagan book whose Chapter Nine is ''Tails'' we've finally found the answer. The answer we found for the clue Sagan book whose Chapter Nine is ''Tails'' is: