The FBI's Behavioral Analysis Unit hunts humanity's worst nightmares. But there are nightmares humanity doesn't dream are real. The BAU sends those cases down the hall. Welcome to Shadow Unit. The Shadow Unit series was created by award-winning authors Emma Bull and Elizabeth Bear. Contains Always Crashing In The Same Car by Will Shetterly Spell 81A by Amanda Downum and Elizabeth Bear Closet Monster by Leah Bobet