Free for US Kindle right now:
Shadow Unit 1, shared-series novellas by
Will Shetterly, Emma Bull, Elizabeth Bear, and Sarah Monette
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. There, Stephen Reyes and his team pursue criminals transformed by a mysterious force: the anomaly.
Welcome to Shadow Unit.
The Shadow Unit series was created by award-winning authors Emma Bull and Elizabeth Bear.
Contains four novellas:
“Breathe” by Emma Bull
“Knock On Coffins” by Elizabeth Bear
“Dexterity” by Sarah Monette
“A Handful of Dust” by Will Shetterly
plus bonus material.