Wicked Science: The Weakest Link. Jack is turning into quite the nuisance as we head into the second half of the season. When his attempt to change tack and lay on the charm with Elizabeth falls about as flat as you'd expect, he plays manipulator in order to ensure Toby and his friends are all out of the way so he can break into his shed/lab again - only to unleash decidedly more than he bargained for. This is another strong episode, and thankfully there seems to be no sign of the downturn I thought season 1 underwent at around this point. Toby doesn't seem to be holding a grudge against Elizabeth for the events of last week, but Elizabeth is definitely holding one against Jack, and even Verity doesn't seem to be very impressed with him, actually suggesting to Elizabeth - in front of him - that she turn him into a toad!
