We follow Savannah, as she tries to put the kibosh on a big reveal of the Otherworld and the release of a nasty virus, and along the way we touch base with all of the other women from the earlier books. It should have been awesome, but it felt thrown together.
We have to be reminded that Savannah's got amazing power, that she's 'special'.. Once more, the cabals prove to be totally useless, (one wonders how they manage to survive at the top of the tree, seriously its like they're wearing blindfolds and sticking their fingers into their ears) The final throw-down is strangely uninvolving. They go to see Lucifer and he's a complete let-down, he also reminded me strongly of Jeff Bridge's character in Tron Legacy. I still don't like Adam and Savannah, possibly because I can't remember a single identifiable thing about him, other than Savannah's lusted after him since the age of twelve.
However with that said, it was good to see all of the old crowd, even if we didn't get a completely satisfying story. I loved Eve and Jaime. It was good to see Hope and Karl, and Elena finally stops whining about her awful childhood (which is a total plus)
Would I recommend? Yes, if only to end the series. As a standalone, it doesn't work particularly well, as you would need to understand the world. For myself, I will return to the start of the series and reread. It's still Kelley Armstong and I love her.