Abhorsen started off with a prologue depicting Sabriel and Touchstone situation at Ancelstierre, which made an unexpected opening. Then the book picked up from where Lirael ended, at the Abhorsen's house. Lirael, Sam, Dog and Mogget were surrounded by the Dead Hand lead by the Greater Dead Chlorr. They needed to leave the house to rescue Nicholas who had been tricked by Hedge to excavate Orannis, the Destroyer.
To get out of there unnoticed, there was only one way: to go down through the well where an unspeakable fear live. Somehow Mogget turn into the Free Magic being he was before went he encountered the resident of the well. The other three run away to save themselves and left Mogget behind.
They managed to get to Nicholas and rescued him when Lirael used her Charter Skin to turn into a barn owl to get to Nick but the piece of metal that was in Nick taken charge when they were halfway through and Nick was once again enslaved by the Destroyer.
All these happened not before they have to face Hedge and the rest of his servants of Dead. Mogget also reappeared in the story unscathed, which was another mystery that will be solved at the end of the book.
Since they failed to rescued Nick and failed to barred the hempisheres from crossing the wall, they have to find another way to stop Orannis if Hedge plan of combining the hemispheres at a Lightning Farm that Nick had ordered to be built at Forwin Mill in Ancelstierre materialized.
This forced Lirael to go into Death and used the Dark Mirror to see how Orannis was bound in the Beginning. Knowing the full wrath and the terrible power of the Destoyer, Lirael did not waste time and thanks to the Sight of the Clayr, all seven people that she needed to be there to help her out were right in front of her when she came back to Life. Together they fought the Destoyer.
But is it too late?
Abhorsen finally reveals the true identity of the Disresputable Dog and Mogget and also the true power of Sameth. It also tells us a bit more in detail how the Charter is made and at what cost. But most of all it is about the testament of friendship between Sameth and Nicholas who literally must lay down his life in the course of the action.
When I read the last word of this book, it leaves me craving for more. I am desperately in love with Sameth's character and desperately want to know what happened to the characters after they fought with the Destroyer specially Sameth (duhh) and Nicholas.
The ending suggest that Nix might has more tricks up his sleeve. I am hanging on that thought in order for me to fulfil my craving. Also I think this trilogy should be made into a movie.
p/s: To know more about the trilogy go to http://www.abhorsentrilogy.com