Mark McCain is agog when the stagecoach stops at their ranch because of trouble with a wheel. The only passenger on board is Samuel Clemens, none other than Mark Twain. Mr. Twain isn't very nice and doesn't really want to talk to anyone. When Mark asks him to tell him what happens in a future chapter of his serialized book Huckleberry Finn, he tells him that Finn is dead and tells him to go away. Lucas learns that Twain is carrying a heavy burden but Mark is not in a forgiving mood.
—garykmcd