“Chrysalis” is episode five of season seven of Star Trek: Deep Space Nine.
Dr. Bashir arrives at Quark’s and asks if O’Brien has time for a drink. He doesn’t. Odo and Kira are going to the holosuite – but they’d rather be alone. So Bashir goes to bed, and is about to go to sleep when Nog contacts him. Julian is needed in the infirmary, because the Admiral Patrick threw out the doctor attending. The admiral and his staff have just arrived on the Farragut. Only it’s not an admiral and his staff – they’re Patrick, Lauren and Jack, the genetically engineered from “Statistical Probabilities”. They have brought Sarina for treatment, as Bashir wanted. Only he was only considering bringing her to the station for treatment, when he was ready.
Sarina is cataleptic, and Julian thinks he can help her, and promises to do so. First he has to straighten out the whole ‘impersonating Starfleet officers’ thing. Sisko is not terribly happy. Especially as last time they tried to give military secrets to the Dominion, to stop the war.
Sisko is willing to let Bashir go ahead with the treatment, which is completely untested and might not work. Sisko says he will straighten out the problems with Starfleet, but plans to send the others back to the Institute. Julian asks for them to stay, instead, because Sarina has been around them for 15 years, and Julian wants her to be around familiar faces. Jack wants to help with the surgery; Julian suggests otherwise.
Julian asks for O’Brien’s help, because the most advanced piece of equipment he has is not good enough to do the job. Miles says that what he wants is impossible, because he ‘can’t break the laws of physics’ and that no one can. The sort of phrase that is associated with Scott in TOS. Jack agrees that the laws can’t be broken, but they can be bent – and the other three have done so, altering the machine so that it is good enough. The operation is over very quickly, but nothing seems to change with Sarina. Until it does.
The new Sarina is brilliant, but she also seems rather more stable than the other three. Which means she has less in common with the rest, and rather more in common with Julian.