Farscape Season 1, Vol. 6 - Till the Blood Runs Clear/Rhapsody in Blue
The blood in question in "Till the Blood Runs Clear" belongs to the  warrior D'Argo, and it starts to flow when he's captured by a pair of feral  Bloodtrackers, mercenaries who look as lovely as their name would suggest. The  obsessed Peacekeeper Captain Crais has put a bounty on the heads of D'Argo,  Zhaan, and Rygel, which Crichton and Aeryn discover when they set down on a  desert planet for repairs but neglect to tell their shipmates."Rhapsody in Blue" takes Moya and her crew to a remote Delvian outpost, where  the head priestess has lured Zhaan to help her keep her madness in check, or so  she says. There's something more sinister going on in this power grab, and it  has something to do with Zhaan's dark, criminal past. The crew is paralyzed in  self-pity and Crichton is on the verge of an emotional breakdown, but Zhaan's  torment as her past comes flooding back gives this episode its punch.--Sean  Axmaker