The Serpent-Witch

A mysterious "serpent woman" in the employ of Yaropolk Rostislavovich in Zarubets. She is reputed to be magically powerful, and apparently, had a hand in kidnapping Vladimir Sviatoslavovich for her lord.
She went to meet with Vadim after Vasilii magically contacted a commander after sneaking into Zarubets, and offering money to turn over Yaropolk Rostislavovich, whose army is camped out (and surrounded) in the city. As later attested, she came with two invisble companions - another woman and a man who smelled "wolfy" (according to Vadim's wolverine). She demanded 200 rubles up front, and an additional 500 after the exchange is made. Sha also asked not to be contacted directly (to avoid any impression that she is negotiating with the enemy).