Some images of Petra/Cry undergoing electrotorture, from Cruel World's CruelPunishment_115.
A new device, the "arch frame", I don't know how else to describe it. But she looks magnificent naked, stretched and cuffed to it. Her feet point and her toes curl as she goes rigid with the agony.
To "arched" aficionados worldwide, rejoice!

P.S. Her feet and legs are really worth watching in this video.