Late is the hour, dark the night. Clouds blanket out the moon and stars. A lone figure is seen slipping out of the forest and onto the main road leading into the village, in search of it's doctor.
An agent of the Vatican, Father Titus is one of it's highest ranking and most effective special agents.
Under the sewers of a large town ancient burial chambers are discovered. If the PCs investigate they fill find that a pale white flowers grows amongst the graves, in the dark.
How do they survive without light? What is their origin? Why in a burial chamber and not just in any old cave?
Can they be sold or do they have any special quality at all? It is up to the PCs to discover.