This is a great novel! I want to make that clear right up front. I read breathlessly as Mike and BT moved from one crisis to the next. And Trip's multi-parallel world experiences translated through his drug-induced altered consciousness added a lot of needed depth to the adventure. I loved every page—but, I really struggled over my five-star rating because the simple truth is that the sequel is not as good as the original novel. Since I can't up the first novel's rating to six stars, I had to decide whether or not to downgrade this one to four even though I loved it. As you can see, I decided not to, but I feel the need to go into a little bit of detail regarding my dilemma.
The first novel is a little bit mystery and a lot adventure story as the yeti make themselves known in backcountry Alaska and start ripping people apart and eating them. There are a lot of characters involved—plenty of redshirts to build tension, but most of those people actually got to become more than two-dimensional characters before they were killed off in Poseidon-Adventure like fashion. And that was important. Whether you loved them or hated them (and you did both), it mattered when those character died.
In this novel, we get very little of that kind of depth. We do have new cast members introduced, but most of the people killed off are simply not around long enough to get some paint on their red shirts and become individuals. On the other hand, if you view this as a transition novel, Trip gains a lot of depth, and the new character, Mad Jack, shows a lot of promise as a potentially fascinating individual. So, the story is not all one running battle—even though it pretty much is.
So, maybe this one should be four-and-a-half stars. I still can't decide. What I do know for certain is that I am already looking forward to The Devil's Desk 3 and I will probably reread volumes one and two to make sure I'm fully prepared to enjoy it when it comes out.