Requiring a cure to their wight cursed members, the mistwalkers sojourned to the pond at the north of krezk, investigating its restorative properties. Cleansing themselves, it occurred to them that they may be able to halt Ireena's transformation with the powers of the spring, and possibly even cure Valda of hers.
However, journeying towards the Burgeonmaster's manor at which the women were staying, the party discovered them already en route to the waters. Ireena in the lead and Valda protectively following. When questioned, Ireena said she felt as if something called her there, and the party escorted her the rest of the way.
Upon arriving, an image of a man bearing resemblance to Strahd, but bedecked in regal armor and radiant smile. He reached out of the water towards Ireena, and the party realized with a start that this must be Sergei, Strahd's brother and Tatyana's husband. Recognizing that Ireena was the reincarnation of Tatyana, the party allowed Ireena to enter the water and move towards his embrace.
Yet not all was well. In halting motions, Valda attacked the party as if posessed, uttering in Strahd's voice how Tatyana was his and that he would not lose her again. Defending Ireena, the party allowed Sergei to reunite with his lost lover, pulling her into the water protectively and bringing her to shelter.
Outraged, Strahd shouted "I am the land, and you shall know my fury" through Valda before unleashing a torrent of lightning upon the mistwalkers and then forcing valda to sprout grotesque bat wings and fly off towards Ravenloft.