"Fulgrim" was an excellent read. As I work my way through the Horus Heresy, with plenty of background lore knowledge to start with, I am finding a great deal of fascinating lore that sheds light on famous events. Fulgrim carries on that grand tradition.
This is about the fall of the Emperor's Children. A Legion dedicated to finding perfection in the arts and war. Their Primarch, Fulgrim, is a true "renaissance man". Warrior, General, Poet, Artist, Sculptor, etc. In essence, the least likely of Legions to fall to Chaos. Wrong.
Onboard the Pride of the Emperor, Fulgrim's flagship, the beautifully designed and architecturally marvelous ship plays host to some of the most elite and accomplished of the Remembrancer program. We will meet the sculptor, Ostian Delafour, the famous artist, Serena d'Angelus, and the gifted musician and composer, Bequa Kynska. These luminaries are accepted and even feted among the Emepror's Children and Fulgrim himself.
But as the 28th Expeditionary Fleet engages the xenos race known as the Laer, it all begins to go very wrong. The Laer worship Slaneesh and as the brutal campaign grinds on the Emperor's Children are exposed to strange and vibrant colors (a purplish hue with some black, as a hint of things to come), coupled with these new sensations the corrupt Apothecary Fabius Bile is continuing his experiments into "improving" the Astartes. Yet things will come to a head at the climax of the campaign when Fulgrim captures a xenos sword known as the Laer-blade. It, in reality, houses a daemon that will nefariously take over Fulgrim's soul and corrupt the Emperor's Children.
This part of the story is a dark one indeed. The humans on board also succumb to Slaneesh's influence and are truly some of the darker stories in this tale. This time period also overlaps with the events from the last novel, as Fulgrim and Horus meet and plan for Istvaan.
The next part of the story has the Emepror's Children helping their close brothers in the Iron Hands. Even the great friendship between Fulgrim and Ferrus Manus (Primarch of the Iron Hands) will be tested as the blade's foul influence starts to change Fulgrim's personality.
After a brief, but very interesting, run in with the Aeldari, where Fulgrim will ignore their warnings and commit an atrocity. From here are the famous events of where Fulgrim, on the orders of Horus, will attempt to turn Ferrus to the Chaos cause. It is an utter failure and all of these events will lead to the tragic events of Istvaan V where the Iron Hands, Salamanders, and Raven Guard Legions are decimated in the infamous Dropsite Massacre on Istvaan V.
An excellent addition to my 40K collection and a very important novel of how Fulgrim came under the influence of Chaos and the fall of the Emperor's Children.