The Watcher (Audio Drama)
The Watcher is an audio drama in the Horus Heresy series by CZ Dunn. It was released on the 24th of December 2014 as part of the Black Library 2014 Advent Calendar. A prose version was released as part of "The Horus Heresy Quick Reads Subscription" week on 28 February 2016, which was renamed the "Legions Divided Quick Read Collection."
A shuttle returns to the Solar System bearing the sole survivor of a traitor attack – however, delirious and so close to death, his tale remains untold. Ison of the Knights Errant, formerly a Librarian of his Legion, delves into the mind of the warrior, and the truth of it will chill him to the core...