Last week I gave you a taste of the world in which the Senses Novels play out. The viewpoint was from the side of the enemy of mankind, actually, the enemy of all life on our planet. What you may not realize is that most of the action in that mini-series is from book two, DULCET.
Each of the books is linked to the others. AURA gives the majority of the background information for the world of the Senses Novels and is one of the reasons that I have made it free (US Amazon store, Smashwords, iBooks, etc.) Each of the subsequent novels, while possible to read as stand-alone, reference the other books for background.