This Charmed book can be alternatively called, 101 Ways to Die. He writes very succintly, putting each and every event into nice, summarized fashion for the reader to read. Unlike Hurricane Hex, this book focuses on the demons, and a multiplying one at that.
The doppelganger in question duplicates himself each time he dies, and the method used to kill him becomes ineffective.
Throughout reading this book, I am suddenly enlightened by the many ways a person can undertake to kill himself. Drowning, jumping off a building, getting shot by a crossbow, getting hit by a shotgun, crashing his own van, ramming himself into a wall, blowing himself into bits, and also even being shot by a bazooka. This Charmed book approaches a new concept of a demon - a regenerative one. Kudos to Greg.
Also, I am most impressed with his creative flair. The spells used throughout the book are aplenty, and each one is written perfectly and wonderfully, with a balanced sense of alliteration, tone and rhyme. I am excellently thrilled with Greg's spells which left me satisfied each time I read one aloud.
Greg's storyline is flawed at times, with some parts of the storyline and detail falling short, but the characters like Darryl and Chase develop with excellence. I am also slightly disappointed with the lacklustre ending, but overall, the book was exciting and wonderfully entertaining.
I would buy more of Greg's books in the future (this being one of them), but I would like to advise him not to watch Final Destination while he is writing it.