This pdf is 4 pages long, 1 page SRD and 1/2 page editorial, leaving 2.5 pages of content for two monsters:
The CR 8 Cerebremorte - a blackened, undead, lower jaw-less thing with a remnant of its spine wreathed in purple flames - its darkfire shaking the resolve of mortals is one of its attacks, the other being a ray that drains PSP or mental attributes.
The second creature herein is the CR 12 Cognition Devil, a being not only shrouded in an aura of deadly hellfire, but also psionically endowed to reduce mortals to their violent base instincts and desires via their psi-like abilities.
Editing and formatting are top-notch, I didn't notice any glitches. Layout adheres to a 2-column standard and both new creatures get their own unique piece of full-color artwork, which is nice. The pdf has no bookmarks, but needs none at this length. What can I say about the two creatures apart from that they're nice, provide signature abilities, come with neat artworks and at a very fair price. While they did not blow me utterly out of the water, I enjoyed them and thus will settle for a final verdict of 4.5 stars, rounded up to 5 for the purpose of this platform.