The second installment of the Chronicles of the Keeper starts not 65 million years or so ago, but in the ninth century in Europe, in what is now Scotland. Once again, we leap through time for the first part of the novel until the story kicks into the 'now' for the last 2/3rds of the book. By now (and this will be a little spoilery if you have not read the first book in the series) we know beings (godlets?) from ancient Thule have been involved with humanity since its inception. One side wants to dominate humanity, literally feed on and enslave humanity, while the other faction would rather 'social evolution' or such take its course. You are free to interpret this as a good versus evil struggle, but that I believe was not the intention of King.
The antagonists are established early in the first part here, as in the last volume, in King's selective tour through history, this time involving Vikings and some Germanic nobles in the 15th century, but all beginning with the artifacts the Vikings found on what is now Iceland-- the skull and some talisman once possessed by an Irish monk who died on Iceland.
While King introduces another broad, new cast of characters here, we have a few hold overs from the first installment, namely, our main protagonist Robert Ferrow, former copper in Northamptonshire who got promoted in the last novel to inspector (which I take it is akin to detective in the U.S.). I will not go into the plot more to avoid spoilers, but once again, King serves up a winner here. The novelty wore off a bit here, but still, a powerful, engaging story in true epic fashion. This may suffer a bit from the 'sophomore curse' but not too much, as once again, we have a complete story. Nonetheless, the final denouement is hinted at as coming later; e.g., the next volume. If you liked the first book in the series, this will not disappoint. 4 immortal stars!