"Dark Futures" is an exciting novel with a lot of fast action and an incredibly mean new Terminator from the future.
The story moves really fast, on two different time lines. On both of them, John Connor and his mother Sarah are trying to stop Skynet from destroying humanity, but it is a lot stronger than they are, and maybe smarter. The new Terminator is almost indestructible, and they have to hit it with everything they've got.
As well as all the action, between the lines, the book is looking at interesting stuff like Artificial Intelligence, and whether we can change the future, or whether the future is fixed. You can tell that the author has really thought about how AI and time travel would work.
The characters are good, too. It is interesting to see John Connor grow up in the two time lines. The genetically enhanced people who come back from the new future to help him against Skynet and the new Terminator are especially cool. They are still human, but maybe only just. Jade is really strong, much stronger than any of the men, and very beautiful, but she is also quite a complex character.