Miss Isringhausen
Alice Isringhausen (Sarah Paulson) is hired from back East by Alma Garret to tutor Sofia. Isringhausen remains unobtrusively in the background with Sofia throughout most of the drama between Alma and Seth. After Seth's family suddenly arrives, in Alma's newly upset state, Alma and Isinghausen have an argument over Alma's perception of Isringhausen's lack of warmth towards the girl, and she is fired. Isringhausen does not leave town, however, and instead begins to spread tales of Alma having been behind Swearengen's murder of Mr. Garret. Swearengen quickly realizes that she is not what she seems to be, and she confirms that she was indeed sent by Mr. Garret's family to wrest control of what promises to be a lucrative claim away from Alma, by any means necessary. Swearengen appears to go along with the plan to frame Alma, but correctly identifies Isringhausen as a Pinkerton, whom he despises as inferior to even his own admittedly low moral standards, and, more importantly, he calculates that the entrance of large and powerful interests from outside the camp would be inimical to his own interests. Therefore, he makes plans with Bullock to double cross Isringhausen by getting her to document her scheme rather than exposing it. Claiming light-heartedly -and deceitfully - to be a former steamboat captain on the Mississippi, Miss Isringhausen has several romantic encounters with Adams, who is also staying at the Grand Central Hotel.
Read more about this topic: List Of Deadwood Characters, Recurring Characters