"They've Got a Secret"
I had a great deal of difficulty getting through this one. The central tension of the episode revolved around D'Argo mistaking the cast for people from his past, and it was just painful to watch because I couldn't buy into the premise. And once again, aliens can cross-breed.... D'Argo's one-note rage-guy act is getting to me.
"'Til the Blood Runs Clear"
Once again, rage-guy D'Argo deserves everything he gets; I have a tough time mustering sympathy for this character. The instantaneous shift to "John's Ally" comes too abruptly, but I'm glad for the change. Aeryn steals the show with her practical approach to their problems on the planet. There is some weird "sci-fi stuff" going on with the wormhole and with Zhaan, a product of scripts produced by soap opera writers instead of sci-fi writers.
"Rhapsody in Blue"
There is some really good stuff in this one. The hallucination scenes are handled believably this time. Lots of grist for the conversation mill, as this one brings up topics of theosophy, cynicism, and morality. The episode exemplifies the kind of classic storytelling that gave longevity to Star Trek TOS and the Twilight Zone. David Kemper's background with Star Trek and Sea Quest really shines through. He'll go on to write three more episodes this season, and will be a continuing presence for the life of the series. I groaned a bit at the "unity" sequences, but got past it.