The Pictures of Emptiness

The Doctor finds himself on trial before the Shadow Proclamation where the Crystal is legally returned to Gisella. The Doctor is ready to continue his mission until Gisella betrays him, staying with the Darksmiths. But she accidentally reveals where the Darksmiths are meeting their client. The Doctor arrives on the chosen planet, and becomes involved in an adventure involving missing eyes and souls. Will the Doctor solve this mystery and stop the hand over of the Crystal?