Severance drills down on relationships as the Innies, Outies and Others all explore what they mean to each other. The result is a slow episode where every moment counts. Of all the episodes this season, "Attila" may be the one most lacking in plot momentum. It's also one of the best.

That's because the relationships we're talking about are really interesting and played by really great actors. The simplest, if you can call any relationship on this show simple, is the one between Mark and Helly, who's now returned to the severed floor. Mark and she have been making moon eyes at each other since the middle of the first season, and although "Woe's Hollow" threw a serious wrench into their courtship, Mark has moved past that block and tells Helly what happened during the retreat in Episode 204.

Now it's her turn to feel adrift and betrayed. Helly's conflict is...