During an excursion into old catacombs,Harry,Draco and a Slytherin youth get lost in undiscovered parts of it.Without a way back they venture deeper into the labyrinth of corridors and halls.During their journey they discover a city under the earth,to whi

HP/Vampires/Mages x-over; Three friends have to learn that there are darker, more dangerous things lurking in the darkness than Voldemorth, while one other has to struggle to maintain the last bit of humanity still left within his soul...