I think WOW!!! about covers it. :-)
This fourth tale is, just like the previous three, an excellent mystery plot, beautifully illustrated and well worth re-reading many times (there's always something new to spot in the background of each panel). Along with the title story there's a hefty how-the-art-was-done essay by artist Juanjo Garnido, loaded with preliminary sketches and variations, and then, tucked away at the very back of the book, two Blacksad "short stories" ("Spit at the Sky" and "Like Cats and Dogs").