I liked this one better than the first book. I enjoyed the characters, I really liked Morgan in the first book and like her even more after this one. One thing I could have done without: the "Fever." (Like the "Needing Period" in the BDB books).
If you like action and sex, read Edge of Oblivion. You don't have to read Shadow's Edge first in order to understand Edge of Oblivion since the focus is on different characters. Edge of Oblivion was a page turner and hard for me to put down. Once I finished, I still thought about the story for several days later.