After eight full seasons, Zack is back.
And he might be a killer.
Im guessing that he isnt, but at the very least, it looks like he just kidnapped Brennan.

Credit: Patrick McElhenney/FOX
Did I mention that Zack is back?
But its been eight seasons, so lets start with a refresher.
Early in season 4, Zack admitted to Sweets that hed never actually ended a life.
He only confessed to murder because he believed that helping a killer was the same as killing.
On paper, none of this looks good.
But he also risked his whole plan so that protect one life, Hodgins, from an explosion.
And they never got the full story: Sweets wound up taking his secret to the grave.
Its hard to argue with the fact that Zack deserves closure.
I just never expected closure to look like this.
1: Its Cam who gives this killer a nickname.
She would pick a cute nickname, wouldnt she?
Shes wearing Brennans clothes.
The victim is Melissa Goodman (Hint No.
Basically, she was killed because Puppito could style her hair like Brennans.
Shes not the only one.
Brennan hasnt been sleeping well lately, and her dreams have taken a turn for the disturbing really disturbing.
In oneInception-style nightmare, a burned figure hunts Brennan in a darkened lab.
Both of Wendells hands are badly burned.
He takes Brennans hand, touches her face, and says (Hint No.
), If you knew what I knew, youd be so proud of me.
Thats almost exactly what Zack said when Brennan found out the truth.
I typically begin with trauma that is most readily apparent, she answers, catching the deeper meaning.
(Emily Deschanel does great work capturing Brennans fear and vulnerability in this episode.)
As Brennan starts in on her apparent trauma, the rest of the team keeps following the evidence.
The bones lead to hints No.
8 and 9: The killer knows human anatomy, but his hands are weak.
Like George Gibbons before him, Reynolds is a weak personality whos been preyed upon by a strong one.
(I seem to remember Caroline saying that about Zack once.)
10), so he cant help with identification.
Booth and Aubrey go back to the evidence, questioning why the killer targeted Melissa to begin with.
Leaving her body for the team to find did nothing but strengthen Brennans determination but maybe thats the point.
She wouldnt have been willing to seek help if it werent serious.
No one else is there.
As Brennan and Angela sort out crossed wires over the phone, Brennan looks up.
I know who sent that email, she says.
Hes here right now.
By the time the rest of the team gets back to the lab, Brennan is gone.
The killer is musical, with off-the-charts mathematical and computational linguistics skills.
Hes familiar with robotics, or maybe applied engineering.
Someone who used to work at the lab, Booth realizes.
I know who it is.
He runs, leaving Cam to sigh, Oh no.
It cant be, as I hit the second stage of watching this episode: excitement.
Were talking about Zack again.
Look at all of this continuity!
Meanwhile, in a dark room, Zack tells Brennan that its time to wake up.
Dr. Brennan, he says.
It is good to see you again.
You and I, we have so much to talk about.
What has he been through these past eight years?
but that turned into bargaining pretty quickly.
Everything is pointing to Zack for a reason.
Its possible that someone is framing Zack.
The first stage of next season is closure, and Im ready.