Imperfect (The Horus Heresy Short Story)

A simple game of Regicide between Fulgrim and Ferrus Manus is far more than it seems. Especially since Ferrus Manus is dead... What's going on, and what part does Fabius, Apothecary of the III Legion, have to play in it? Read it because
Primarch Fulgrim seeks to understand his failure in turning his brother Ferrus Manus to Horus's banner. This story shows the depths to which the lord of the Emperor's Children has fallen, and a glimpse into the madness that is consuming him.