Outlander has had its fair share of horrifying moments, many of them having to do with sexual violence. “Wentworth Prison” is an hour of sustained sadistic terror at the hands of Jack Randall, and it is incredibly defeating and deflating. Jack is grotesquely obsessed with Jamie, with breaking him and with manipulating him and those close to him, and he finally is able to do whatever he wishes. As a villain, he is remarkably effective, and this episode works overtime to make him as horrifying as possible. It can feel exhausting and grueling, confined to these small spaces of abuse, but thankfully it is told compellingly and with purpose.