When you get far enough north, you reach a latitude at which the sun no longer sets during the summer months. (It also, incidentally, doesn’t rise during the winter, but that’s a far less romantic image.) You can look out the window in the middle of the night and find the sun resting comfortably on the horizon, imbuing the sky with a warm reddish light like a perpetual sunset. It’s a seductive setting -- isolated, beautiful, alien -- and an inspired one for Rebecca Dinerstein’s debut novel, The Sunlit Night.