Jack really needs to look at his hiring policy and people management skills, doesn't he? First Suzie, now this.

( Torchwood 1.04 -- Cyberwoman )

The episode doesn't really work as the fourth episode of a new show, because you don't have enough reason to care about Ianto and Lisa. But it does work as a fragment of a longer piece, and I could chatter on at far greater length about why. There's a hell of a lot of characterisation and things implied that work a lot better when you have more of the long term story arc.