This is certainly a Torchwood episode I didn't hate. Though not exceptional, there is some fun to They Keep Killing Suzie and it, I think, plays up the fun a story like this can have. With a bit of a crime caper combined with what really is Torchwood's recurring villain, the appeal of this comes from Indira Varma and she definitely stands out as a performer enough to carry this episode, but Gwen is pretty great here too. It is a shame Suzie couldn't become a recurring threat like the show runners apparently wanted at one time until she was unavailable for series two. While I have a lot of issues with early era Torchwood, I think this is the version of the show that could have worked a lot better - a show that takes itself a little less seriously can get away with more goofy content like this and my thoughts around They Keep Killing Suzie are far more positive because of it.