The specific story tonight concerns Maggie, who did kill her FBI security last week on Joe's behest. But tonight, she's in it for revenge, pure and simple - revenge against Ryan who killed her psycho follower husband last week.
It's all about family, as it always is. Maggie kidnaps Ryan's sister to lure him to a place where Maggie will kill Ryan by short-circuiting his pace maker - which, as Maggie cleverly psychotically says, will actually mean that Joe's wound will have killed Ryan, since the pace maker was installed to keep his heart beating ok after the wound. So Maggie manages to make this something on Joe's behalf after all. And Ryan's sister, after being forced to wach this happen, will be killed, too. Mike of course saves Ryan just in the nick of time - it's way too soon for Ryan to die - but it's a good little chilling story anyway.
The other family story tonight concerns the threesome now with a woman tied up in the basement. One of the guys, it turns out, has never killed anyone - he lied to the followers to stay in the group. He told Joe the truth, and Joe, the understanding "father" of this sicko brood, said not to worry, you'll be able to kill whenever you're ready. Ah, nothing like an empathetic fatherly psycho.
So the question tonight is will the follower with a conscience still alive be able to man-up and kill the tied-up kidnapped woman. There are some good twists and turns in this, so I won't tell you what happened, except to say the twists are appropriately twisted.
See also The Following Begins ... The Following 1.2: Joe, Poe, and the Plan ... The Following 1.3: Bug in the Sun