"The Sally sisters, raised in a rural Jehovah's Witness community in Arkansas, spent their teens and twenties moving between cities and towns in the South and Midwest, working difficult and poorly-paid jobs and falling in and out of relationships. Caught in an eternal sibling rivalry--where Lori, younger by a year, protected bold, outgoing, reckless Sam--the two women eventually married a pair of brothers and settled down in Elkhart, Indiana, just...