After the quite wonderful End of Eternity, the fifth installment of the Legacy of Fire adventure path (The Impossible Eye by Greg A. Vaughan) is both not quite as good and also a bit more pedestrian. Now, seeing as it’s set in the legendary City of Brass, that’s maybe a bit weird. You would expect a planehopping adventure to present weird and wonderful scenes galore. Here the problem is the main setup: the PCs end up in a huge temple building located in the City of Brass – but said temple is the locus of a dimensional trap and is totally cut off from the rest of the city. So the fact that it’s located in a huge, legendary location doesn’t really matter in any way, and the PCs are essentially stuck inside a big dungeon with no access to the city.
In the end the PCs are assumed to escape and to interact with the city, and the book does give some small bits of help for that: there’s a “set piece” adventure detailing one way to return to their home plane, and then there’s an article detailing the City of Brass in general. Still… I sort of feel this was a missed chance, a lot more could have been done with this setting. In addition, there are some head-scratchers: fire-based traps in a place where most of the population is immune to fire, for example.
All that said, it’s not bad by any means. As a dungeon crawl it provides a nice variety of encounters, and not all are of the “see monster, kill monster” variety. There are multiple ways for the PCs to approach the scenario, and a social-based approach may well work (depending on who they talk to and ally with).