Shadow of the Past is a short story published in The Primarchs series that was originally part of an anthology. Shadow of the Past was first published as part of the Sons of the Emperor anthology in February 2018. The cover image used is that of Sons of the Emperor, as Shadow of the Past has yet to be published separately.
Dark Apostle Kalta-Ar seeks to raise a religious monument to gain his Primarch's favour. But when the warriors of the Legion begin to die in suspicious circumstances, he learns something has come hunting. Its prey is not the Legionaries slaughtered by its hand, but the one whom they call father, the Daemon Primarch Lorgar.
- Sons of the Emperor (Anthology), "Shadow of the Past" (Short Story) by Gav Thorpe