 Nightmare : And Other Tales of Dark Fantasy ( University of Nebraska Press , 2004 ; contains all Stevens ' known short fiction except " The Curious Experience of Thomas Dunbar " , i.e. " The Nightmare " , " The Labyrinth " , " Friend Island " , " Behind the Curtain " , " " Unseen @-@ Unfeared " , " The Elf @-@ Trap " , " Serapion " and " <unk> " ) 
