Not forgetting "Countrycide". Remember the "Is she for real?" look the cannibal patriarch gave Jack during the interrogation scene? Jack knew how low people can go, & the cannibal *knew* that he knew. I also suspect Jack has a very healthy fear of slipping to that level himself, & that's one reason he recruited Gwen. Though I think the writers made her entirely too naive & innocent after the first ep. Several years ago, my next-door neighbor was a policewoman, & she was horrified by some of the stuff she saw in her job, but she wasn't freaked by it. The writers' fluffy-bunny approach to Gwen really got on my nerves at time, & was a pity, she started out so well.