The scene with Elizabeth and Matthew was terrific. In full Mistress of Collinwood mode, she uses nothing but sheer force of personality to talk him out of killing Vicki. But his suspicions are too much for him, and it was a real shock to see him reach for Elizabeth's throat.
It was great when Matthew went for her throat, and [spoiler]it was just like when Angelique stops Ben later on,[/spoiler] but Liz had no powers, she just stood her ground. The interesting thing about these Matthew scenes isn't the threats or danger to Vicki, but the thoughts we have about what's going on in Matthew's head, and what kind of person Liz must be, who can turn away her killer by force of will alone.