I quite enjoyed this episode.
For what it's worth, here's what I picked up: Pheen = Morphine. Stripe, Boots, Crescent, Knitter - those were all names for their military positions: Boots - being boots on the ground/infantry type, Stripe - appeared to be combat/assassin, Knitter - knits things together; she was their medic, Crescent - appeared to be their leader.
As far as bringing someone else back with them - it would make sense for that to be Lavinia. She seems terrified of the Galanthi and convinced it will bring war (something she would know if she came from the future); she appea