This is a very haunting episode, one that gets to me because I'm very much built as a type who looks to the past and sees her childhood through rose-colored glasses. Unlike a few other commenters, I thought Mercedes was perfect for the role. She's an actress who's always willing to "go there," to be as strange as she needs to be in order to make what she's doing very memorable and stick with you in the same way that some songs become "earwigs." I disagree with commenter jpc and think the story was great, too. I mean, not a lot happens in terms of great epic action, but in that sense, "Moby Dick" was about a fishing expedition, if you get my drift. If you're into drama that has a psychological focus, this one might be for you.