The Old Man of Damascus is a stand alone scenario for Cthulhu Live 3rd Edition and actually jumps back in history. Most Cthulhu Live scenarios are set during the “Mythos” of Lovecraft and other authors. A few of them, such as Delta Green bring the time-frame up to today and give us that X-Files vibe. This one feels more like Cthulhu Dark Ages than Call of Cthulhu, which is ok by me.
I like historical games and The Old Man of Damascus does not let me down. Like all CL3 products there are plenty of suggestions for costumes and props. This one even has a ton of pre-gen characters you can use as-is or modify to fit your needs. If you like LARPing, give this one a shot.