There are some interesting characters, such as Adam, who is a Mog but has gone over to the side of the humans. I don't have a very good memory for the other books in this series, so I am sure I am missing some of the romance and changing alliances, but I enjoyed the fact that the characters interacted on one level until their allegiances were challenged. Personally, I would have done in Phiri, but Adam clearly had some moral objection to hurting her the way she had hurt others.
The telepathic communication that Ella is capable of, as well as Danielle emergent power to deflect enemies and Sam's telekinesis are all interesting. What middle grade reader doesn't want to have some sort of super power, especially if it can be used to fight aliens.
Readers of dystopian fiction like Grant's Gone series, as well as books like Dashner's The Eye of Minds and even spy stories like Horowitz's Stormbreaker, will find The Fate of Ten to be an action packed addition to a popular series.
That said, I didn't appreciate that there was one f-word buried deep in the book, on page 363. It was completely gratuitous and out of place in a novel that has great appeal to middle grade readers.