Excellent treatment of the subject matter, well up to Adamant's usual high standard. Perils of the Orient is a primer on utilizing the "Yellow Menace" in your pulp games, and it serves that purpose well. The product opens with long piece of flavor text, which I find a bit too long for the purpose. While this detracts from my overall rating, the rest of the product redeems this editorial choice. The introduction cites numerous examples of oriental pulp villains and provides the social and historical context of the "Yellow Menace" as a genre. Different types of villains are detailed in successive chapters, and there is even a chapter on Asian weapons, their origins, and uses. The d20 stat blocks would be useful for anyone running a pulp d20 scenario.
This product could have used a few more maps, perhaps of an historical or quasi-historical Chinatown neighborhood. The illustrations are evocative of the era and genre, even if some of them are seen elsewhere in Adamant's product line. Overall, I'm satisfied with the purchase and happy to recommend it to any pulp GM, especially if you're running a d20 system game.
[4 of 5 Stars!]