A lackluster but still good sequel to the first in the Dark Angels 30k series. Some argue that Lion El Jonson acts "un-primarchly" in this book but I'd argue it shows his biggest weakness, pride, and how it leads to the Dark Angels' role in the Horus Heresy fairly well.
Worst part of the book was how long winded it got at times in describing a singular scene, such as a whole page describing someone's view of the inside of a stormbird.
At 40k's best, it is a sublime drama and examination of mankind on the brink. At 40k's worst, it is pewpew ratatatat boom boom boom. The two narratives found within this book each sum up one of the halves, there.