The book which is only about 200 pages is mostly made up of the two shorts stories. One called 'LEPrecon' - The story of Captain Holly Short's move from Traffic to Recon, and how she became the first female officer to serve under Commander Julius Root and the other is called Seventh Dwarf(which I had already read when it was published earlier, just not in the United States).
LEPrecon was somewhat of a disappointment. The villian, who has a very interesting background, turns out to be flat in the end and the story was just lacking the usual Fowl smartness and edginess. The story is pretty much a prequel that explains the beginning of Holly and Root's relationship. The Seventh Dwarf on the other hand was much better. Mulch Diggins returns as he and Artemis plot to steal a diamond off a word famous tiara. They run into some problems with the LEPcron, namely Holly Short, though trying to steal the tiara from a band of circus dwarfs. This story had the usual Fowl flair and the ending was very interesting.
The rest of the book is composed of various sections that include interviews with the main characters of the series, a fairy code to decode, a gnome alphabet, guides on technology, a very interesting report card of Artemis Fowl's, and some puzzles to solve. I found the interviews most entertaining and the puzzles were okay, though some were quite unchallenging. Overall the book is a good one to fill your time while waiting for Artemis Fowl: Opal Deception.