I bought this looking for Osirion-themed hooks. Unfortunately, almost all the book is only half-hooks. A location will be half-described, along the line of:
"There is this very interesting mountain with [unusual geographic features]. What's going on at this mountain? It's a MYSTERY!"
Why do I have to pay $10 for a book to tell me "something interesting is happening here, but you'll have to make it up yourself." Making things up myself is fun, but I can do that for free. When I buy a book like this, I'm looking for cool story ideas, not [[insert cool story idea here]].
The other function of a setting book, local flavor, is also rather weak. My friend bought the Qadira book and I was struck by how much better that book described local people, city life, cultural beliefs, etc. This Osirion book just isn't that big an aid in designing interesting NPC interactions.