The Ghost-Faced Killer is a prestige class originally from Dragon Magazine #289, November 2001, one of my favorite issues as it was focused primarily on the new Oriental Adventures. Had ninja-related stuff, kaiju (think Godzilla), "Leveled Treasure", and such. The Ghost-Faced Killer was an Assassin-like prestige class available to anyone of evil alignment with a few sneaky skills and offensive feats; it was more like a fighter in basic stats than a rogue or assassin, but gained some Sneak Attack damage dice, the Death Attack ability, and various magical abilities to enhance their stealth and assassination capacities. They could turn invisible, instill fear, turn incorporeal, see ethereal and invisible critters, and imbue melee weapons with the Ghost Touch quality when needed; over the course of its 10 levels, but the abilities were well-distributed.
The same article had the Poison Fist, another Assassin-like class but more monk-like, gaining some acrobatic abilities, natural armor, sneak attacks, and poison use, as well as a few minor magical abilities like Venomous Blow, Totem Form, and Totem Aspect. Also in that issue was the Weightless Foot, essentially a warrior prestige class for anyone with Evasion and some movement-related skills, and the Weightless Foot PrC granted some wuxia-style abilities like Leap of the Clouds, Slow Fall, Acrobatics, Water Walk, Uncanny Step (move along walls by 6th-level in the PrC), Feather Fall, Air Walk, and Fly, amongst other things. The WF was better than the Thief-Acrobat I think, would've been a better inclusion for CV (though probably changing the name to something less odd).