Complex sentence: Smith followed up the series with a novella, "The Night Children", that tells the story of Warden Cross, then 17, and his meeting of Alfred Furnace, the prison's enigmatic founder, who first transformed him into a nearly immortal being.
Split into simpler sentences: Smith followed up the series with a novella, "The Night Children". The novella tells the story of Warden Cross and his meeting of Alfred Furnace, the prison's enigmatic founder, who first transformed him into a nearly immortal being.