Meduson is a limited-release anthology in the Horus Heresy series. It was published in May 2015 and is exclusive to the Games Workshop Headquarters in Nottingham. It was re-released in an "Ultimate Edition" on 20 May 2016 as both a limited number hardback book with two CDs containing "Grey Talon" and "The Either," e-book, or an Enhanced Audio Edition that incorporated audio elements. The short story "Hand Elect" by Chris Wraight was added for the re-release. It contains the same stories featured in the 43rd book in the Horus Heresy, Shattered Legions.
Driven almost to the brink of self-destruction by the death of Ferrus Manus, the Iron Hands now seek vengeance for the many horrors of Isstvan V. Gathering survivors from the Raven Guard and the Salamanders aboard any vessels capable of warp travel, they wage a new campaign of annihilation against the traitor forces across the galaxy - a campaign masterminded by legendary warleader Shadrak Meduson.
- "Meduson" by Dan Abnett
- "Unforged " by Guy Haley
- "Immortal Duty" by Nick Kyme
- "Grey Talon" by Chris Wraight
- "The Keys of Hel" by John French
- "The Noose" by David Annandale
- "Deeds Endure" by Gav Thorpe
- "Unspoken" by Guy Haley
- "The Either" by Graham McNeill
- by Dan Abnett
- by Guy Haley
An examination of the broken nature of the Salamanders.
The Keys of Hel
- by John French
The story picks up from "Riven".
Iron Hands battle against the Emperor's Children.
- by Gav Thorpe
Having been spared the slaughter of the Dropsite Massacre warriors of the Salamanders and Iron Hands Legions have found common cause in taking the fight to the traitors. Yet when they discover a World Eaters force among a civilian population it quickly becomes apparent that they continue to fight for very different reasons – differences that may well be irreconcilable even in the face of utter destruction.
- by Guy Haley
A continuation of Unforged.