James Swallow
Reflection In Blood

A squad of Blood Angels, commanded by Brother-Sergeant Rafen, face off against the Knights of Blood, sons of Sanguinius declared renegade by the Imperium. The traitors offer a gift to their parent Chapter, but can the Blood Angels trust anything that they provide?
Warhammer 40k
short

Also in:
Blood Angels: the Complete Rafen Omnibus
Sons of Sanguinius: the Blood Angels Digital Collection