I really loved this book. One thing about CL Werner is he really gets the dark tone of Warhammer, and it shines in this book. It's a simple quest tale about a group of survivors going on what is basically a suicide mission to stop a curse that has befallen their town. Every 100 years the Lady of Sorrows amasses her forces and attacks the twin towns of Westreach and Eastdale. A hero is found that is destined to stop the curse and save the towns from endless torment. Long story short: stuff goes very wrong, and only a few survivors are left, who carry on the mission despite all odds being stacked against them.
There are some pretty decent and unexpected twists. The cast isn't super likeable, but that seems to be what the book is going for. They are constantly paranoid of one another, and find themselves in disaster after disaster. It's not super surprising to find the mission was doomed from the start.
Warhammer like to sometimes slide into horror territory, and for me, this is probably the book that did it best so far. There is a palpable air of doom over the entire plot and there are some absolutely gruesome and unexpected deaths here(one involving slug creatures, in particular.) It is quite a short book, but it doesn't feel like any time or space is wasted, and it was a well paced story.
One other thing, the Lady of Sorrows herself is a pretty cool villain with a fun design and powers. It sucks that major changes rarely seem to happen in Warhammer fiction. You can't really expect the minor heroes to beat such an important figure in the Age of Sigmar lore in one 280 page book, which maybe sucks some of the tension out, but overall it was a fun, pulpy book and kind of a good barometer for what an above average Warhammer book should be: fast, gruesome, bleak, and fun.