The 'Red Scorpions: Siege of Shadows' is another excellent option. It shows the Red Scorpions in a very difficult and challenging situation, a siege. Here, you can witness their strategic thinking, their loyalty to the Imperium, and how they adapt to a long - drawn - out and intense conflict in the 40k universe.
You can try local bookstores that have a section for Warhammer 40k novels. Some big chain stores might carry them.
'Black Templars: Honor of the Chapter' is also a good choice. It delves into the internal politics and honor code within the chapter. You'll get to see how the Black Templars uphold their values in different situations, which is really interesting as it shows their unique place in the Warhammer 40k lore.
Another good one is 'Void Stalker'. It delves deep into the workings of the Imperial Navy. You get to see the different ranks, the strategies they use in combat, and the complex relationships among the crew members. It really brings the Imperial Navy to life in the Warhammer 40k setting.
One great one to start with could be 'The Knight of Talassar'. It gives a really good introduction to the Imperial Knights, their lore, and their place in the Warhammer 40k universe. It has exciting battles and interesting characters.
One great one to start with is 'Dante'. It gives a deep look into the character of Dante, the Chapter Master of the Blood Angels. It's full of action and shows the unique culture and traditions of the Blood Angels.
One great starting point is 'The Knight of the Blazing Sun'. It gives a really good introduction to the Imperial Knights in the Warhammer 40k universe, with an engaging story that shows their power and honor.
You could start with the Horus Heresy series. It's a popular and important part of the 40k universe that sets the stage for a lot of the later storylines.
Another great 40k novel is 'Eisenhorn' by Dan Abnett as well. It focuses on the character of Gregor Eisenhorn, an Inquisitor. It delves deep into the dark and complex world of the Inquisition, with all its politics, mysteries, and dangerous adversaries. It's a thrilling read that shows different aspects of the Warhammer 40k universe.
Mystery is also a likely theme. For instance, if there are scorpions with some special abilities or if they are part of an ancient mystery in the story. The characters may need to solve the mystery related to the scorpions to progress in the plot.
One possible scorpions novel could be a work of fiction where the scorpions play a central role in an adventure set in a desert. The scorpions might be intelligent creatures in this made - up world and the characters have to deal with them while on a quest for a hidden treasure.