Marianna was born Mary, the daughter of a blacksmith. While her father worked hard to provide for their family, Mary always wanted that little bit more.
While she was still a child, she became adept at sneaking into places and taking what she wanted, and although she was caught numerous times and scolded harshly, all it did was to serve to teach her not to get caught.
As she 'filled out' in her teenage years, she found that she could use her beauty and other 'womenly wiles' to seduce men and some women alike, to get exactly what she desired. Soon, she was embarking upon a deft career of seducing rich nobles to learn the layout of their houses before using her acrobatic skills to break into the houses and take what she wanted.
She continued in this manner for years, and although several of her conquests had their suspicions, she managed to leave no clues and so they were unable to prove anything. Unfortunately, she made the mistake of trying to steal the family heirlooms of a Hellknight from the Order of the Rack and found herself making a hasty flight from her home city of Westcrown to the resplendent city of Absalom.
Now, in a strange city with no resources, she found herself in dire straits until she spent an interesting night with a Half Elf Pathfinder who reckoned that she would be an excellent addition to the Society. With nowhere else to turn, and the lure of the secrets that the Society had, she made an application and was accepted. Little more than a week later, she was approached by the Chelish faction who promised to remove the threat to her family by the Order of the Rack if she would help them in their own agenda. She was hardly in a position to refuse, and if truth be told, she was more than a little excited to be approached by a faction with so much promise.
Now she eagerly awaits her first assignment from both the faction and the Society.