It's Episode 13 of Siege Season...

And the luck of the Loyalists has come to an end. A devastating blow at the Mercury Wall has laid low Rogal Dorn's plans. For him and the remaining Loyalists, the goal has changed. Now it is time to hurt the Warmaster's lackeys.

Meanwhile, at Colossi, a gathering storm builds. Lightning is preparing to strike in our first episode of Warhawk.

Giant Robots advance, clash and smash in this episode. The final bastions of Terra are in danger of collapse, with Mortis on the march, is there truly no hope? Join us for your Thursday Ratings and a breakdown in this episode.

Giant Robots prepare to clash on the plains of Terra.

But before the Titans come to blows, it's time to have a chat about Mortis and whether it is truly deserving of the scores it's about to receive on Thursday Ratings.

In addition, Varela's hopes of having a White Scar he likes survive are back on the up! And the Perpetuals have arrived...

Graham McNeil is BACK on Horus Hour

The Scot in the Sun joins us for one last Horus Heresy bout!

This was an absolute pleasure to record and we got DEEP into the mind of Magnus.

This is it! The one that everyone has been waiting for, the day the siege changed forever.

In the second half of Saturnine, we lose the amount of characters that we expect from a Siege book and we have moments that dare to top Raldaron's one liner for coolest Siege Moment.

Rogal Dorn has ICE in his veins...

We're hitting the big time of Siege Season!

Saturnine is finally here, one of the most praised books of the heresy and one of the greatest clashes of the Heresy.

Join us as we discuss the first half of this galaxy changing tome...

The Lion's Gate spaceport faces the full might of the Traitor host. Within the walls of the Palantine, misguided faith threatens to tear down the palace from the inside. As his Seneschal fights tooth and nail for the port, Rogal Dorn is left with a difficult decision...

It's time for the Sons of Dorn to SHINE!

The Traitors have measured the defences of the Imperial Palace and have grown impatient. The Lord of Iron has been given authority to strike against the critical Lion's Gate Spaceport. The Fists of the Imperium will clash against the Warriors of Iron in their first major battle since Phall.

And meanwhile, within the palace, all is not well as the absolutely exhausted Katsuhiro stumbles upon something unnatural in the aptly named Poxville.

And out in the wastes of Terra, a regiment of Imperial Army race to the Palace to provide much needed support to their Lord.

In an absolute monster of an episode, we cover the monumental second half of the Lost and the Damned. White Scars charge, Katsuhiro battles on and the Clown meets his maker. In an episode that drove Varela to exhaustion, this is SIEGE SEASON!

The Enemy are here, they amass above the homeworld, ready to deal the death blow.

But the loyal sons of The Emperor will not be so easily defeated. Welcome back to Siege Season, as Singh and Varela begin to dissect what is perhaps the most underrated book of the whole Siege of Terra series...