The PDF (even graded on the curve of a scanned book) could be greatly improved on a technical level (contrast and alignment, bookmarks, print clarity, etc), but technical matters aren't the reason to buy (or not buy) this book. Secrets delivers exactly where you want it to, with evocative, reliable single-session adventures. The first in the collection, A Love in Need, is one I've GMed dozens of times for as many groups, not only as a CoC run but even adapting it to my Uresia campaigns. It's an entertaining and instructive example of an adventure designed so (A) the players have the freedom to create and explore their own solutions but (B) the adventure still ticks along with strong pacing and a certain conclusion ... because events at the Sanderson Boarding House operate on their own timetable. The level of interference with the horror underway is up to the PCs, and the quality of their interference is up to their investigative skills, boldness, and quick thinking. The cast of NPCs is memorable, and there's a smart mix of physical clues and dialogue-focused mystery-solving. A Love in Need is, in simple terms, one of my favorite one-shot adventures, for this or any other game. If your players have never waxed philosophical with the The Amazing Kraygen, they're overdue.

A high-quality digital version of one of the landmarks of fantasy cartography. I've been drooling over this map since I was a kid, and it hasn't lost any of its power over me.

A milestone in RPG evolution that still punches its weight all these years later. One of the most essential GMing books ever published, and in many ways it might never be surpassed. Plus it's just really fun.

The style is straightforward and functional, and it's easy to see that some thought went into this ship as both a useful map and as a gaming environment. Good stuff.