From their shadowed origins to the desperate battles that ensued when half of them rebelled against their father, the Sons of the Emperor – the vaunted primarchs – were among the greatest of humanity's champions, warriors without peer and heroes whose deeds became legend. From the Angel Sanguinius, who took the sole brunt of his Legion's most brutal acts, to Vulkan, whose humanity made him unique amongst his brothers, and from dour Perturabo, architect, inventor and murderous warlord, to Horus, whose shining light was eclipsed only by the darkness that grew within his soul, this anthology covers eight of the primarchs and their greatest – or darkest – deeds.