The Emperor's Finest — Sandy Mitchell

The search for the source of an alien threat leads Ciaphas Cain to a drifting space hulk. But when the Reclaimator Space marines suffer terrible losses, Cain and his trusty aide Jurgen must go it alone. With the tyranids waking and a group of stowaway orks on the loose, Cain must use all his ingenuity and cunning to escape the space hulk alive.