: Essential lore on the origins of the Word Bearers' corruption. The Buried Dagger (Book 54)

Some notable titles and authors included in the Horus Heresy Ebook Collection 109 are:

For a using the 109 collection, follow this "Essential Arc" order:

A collection of 109 would not be complete without Tales of Heresy , Age of Darkness , and The Primarchs . These books explain what minor characters were doing during the major battles.