In addition to the critiques, let's try creating a logline from nothing but the image and text on the cover.
Everyone knows what a logline is, right? It's a summary of a book in one or two sentences. For example, a logline for Silence of the Lambs might be: An FBI trainee uses information from one serial killer to track another.
Let's start with today's cover. Perhaps the author can chime in at some point and give us the real logline.