I don't think I'd call LeviaLiz a "zombie." A latter day Lucrezia Borgia is more like it! I just loved Joan Bennett's portrayal of the character as a truly depraved socialite. And when she enthuses to Barnabas and Megan about welcoming Roger and Carolyn into the "club," it's a fabulous moment.
But perhaps the best of all is having David reprimand "Elizabeth" for her failure to carry out a certain assignment--and Liz takes it! David's parting shot about making everything OK with Barnabas adds to the general hysteria of the moment.
Other juicy moments are little LeviAmy quietly, methodically torturing Quentin, Maggie, and Willie in various scenarios.
Nope, no zombies in THAT crew, that I can see!
cheers, G.