To quote star Yvonne Strahovski, the effects on new Peacock horror series “Teacup” are “so gross and amazing.” As viewers of the first two episodes discovered (along with the three families trapped together in the show), crossing a seemingly arbitrary line has serious consequences. As in, your body rips itself open.

“You basically turn inside out; your bones are pulled and reconstituted, being pulled towards the line,” Knb Efx makeup supervisor Carey Jones told IndieWire. “[Creator Ian McCulloch] sent me a bible in terms of the general feel of things, what things should look like, should feel like, and the texture and the flavor of it. Once I read that, I was drawn in, because it was something that I haven’t done before. I’m very much a nerd of old-school moviemaking and things like that, and this had that feel to it.”

Viewers got to see that for themselves...