From what I can tell, there are two main plot threads in tonight’s episode.
From the episode preview: There is some controversy about Boomer’s unborn child, possibly connected to a treatment for Roslin’s cancer.
From the episode summary: Roslin’s story will involve flashbacks to her pre-invasion life on Caprica, and an important vessel in the fleet is destroyed by “Cylon sympathizers.”
However it plays out, I suspect this hour will be packed.
Plot threads we’re keeping track of:
Roslin’s imminent date with the cancer fairy.
Starbuck’s growing displeasure with Adama’s leadership.
Tyrol’s continued inability to let go of his love for Boomer.
Baltar’s rescue and surreptitious concealment of Gina/Six.
Apollo’s spiral into self-destructive depression.
The possibility that Dualla is starting to get a thing for Apollo.
The possible rise of Cat’s stock as a pilot. (Note her prominent role in the confrontation with Pegasus’s vipers, which has been building for several weeks. I have to wonder if that means she’s marked for death, a la Crashdown.)
(Along the same lines, note that Cally’s had a couple of scenes with Adama in the last few episodes, as Tyrol got himself in hot water. Interesting that Adama would regard Cally as the go-to crewman with Tyrol not available. Wonder if that’s going somewhere.)
The integration of Pegasus’s crew with Galactica’s, now that Adama’s an admiral.
The role of Cain’s XO Fisk in the above.
Fallout from the destruction of the Resurrection Ship, and its possible impact on whatever the Cylons are trying to accomplish with respect to the fleet.
Man, what did we do to deserve a show this good?
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