Ars Speculorum, the Art of Mirrors, is detailed in VTR: Mythologies Image:Bullet-nip.png, a book for Vampire: The Requiem which discusses a number of folk beliefs about vampires. It is a discipline that changes the way that Kindred interface with mirrors, which, for most, is quite a big concern. It is associated with no clan, covenant, or bloodline, allowing any vampire to learn it at out-of-clan cost, provided they can convince its shadowy master, Red Jack, to teach it to them.