I picked Carolyn, Charity/Pansy and Carolyn "Fredericks" which was a tie with Millicent. Nancy Barrett was excellent in all her roles.
Carolyn was an excellent character. As CastleBee said, she makes a great progression from spoiled rich Collins to a more mature, but sadder, person - [spoiler]particularly after Jeb dies.[/spoiler] Charity "Pansy Faye" Trask was an excellent character. Barrett did a FANTASTIC job as the possessed mentalist supreme. What a fun character - but still with that hint of sadness which Barrett was able to subtly add to her characters.
The crazed Carolyn "Fredericks" was wonderfully portayed. Nancy Barrett was great in that version of the Carolyn character and did a marvelous job. You could truly believe she had witnessed unfathomable horrors. Millicent was an equally great character; she was a ditz to the max and it really showed Nancy's range.
- PennyDreadful