I shan't spoil the surprising circumstances revealed within that explain precisely how and why Merlin came to bond his scribe and his demon together. I will say that we do get a wonderful look into both character's lives and motivations before they were saddled with one another. The bits with Etrigran attempting to boost his rank in Hell are particularly amusing, if you enjoy rhyming and beheadings as much as I do.
This issue marks the premiere of Bernard Chang on this title. Chang proves to be a worthy replacement for Diogenes Neves, using a similarly detail-oriented style with light inking. Chang also shows his talents as a visual storyteller, the action flowing smoothly and naturally from panel to panel.
I've said it before and I'll say it again - this book is a must-read for all fans of good comics in general and sword-and-sorcery comics in specific. The scripts are uniformly amazing. The artwork is always first-class. You should be reading it, plain and simple.