[Pierce arrives at Lux to find Lucifer alone at the bar]
Well I'm here. This couldn't have waited until morning?
Time-sensitive, I'm afraid. In a way, the opposite.
Just tell me what you want.
Right. Well, we're both familiar with the accomplice theory, that our blind barbarian had someone working for him. ["Yeah."] Well it occurred to me that…what if the Sinnerman was the one working for someone else? What if he was the accomplice? Exhibit A. [he pulls out the photo of the young Sinnerman] Here is Mr. Sinnerman as a child, with a man he seems very close to. Interesting birthmark. It's a very similar shape to your military tattoo, actually, wouldn't you agree? ["So?"] Well, so it stands to reason that this man would be very very old by now. Or, if he isn't, he'd have to be…[laughs] immortal.
[stone-faced] An immortal crime boss. Just like you're the Devil.
Ha. Yes, I know, it does sound absurd, doesn't it? So, as such, there's really only one way to prove my theory. [reaches over the bar] Where did I—ah, there it is.
[Lucifer grabs a knife from the bar and plunges it into Pierce's chest. The police officer staggers to the floor and sprawls out, dead. Lucifer returns to his seat at the bar, nurses his drink for about a minute…and Pierce revives, grunting and roaring as he pulls at the knife handle]
I wonder why I didn't figure it out sooner. The world's first murderer. Marked by God and doomed to walk the earth alone for a tortured eternity. It's quite the moniker! Yet, still, nowhere near as ridiculous as "The Sinnerman."
[Pierce stands and pulls the knife out, and Lucifer looks him eye to eye]
[his secret out, Cain catches his breath and sits at the bar next to Lucifer]
Cain
You may as well pour me one too.
[Cain arrives at Lucifer's penthouse, but it appears Lucifer isn't home]
Cain
Lucifer? Lucifer? Hello, Lucifer?
[Lucifer steps out from the bedroom, welding mask on his face and revving a chainsaw, but stops when he sees Cain's bored look]
Cain
If it were that easy to kill me, I'd have been dead a long time ago!
[Lucifer puts down the chainsaw and refers to a list.]
Right, have you tried... grenade down the throat?
Cain
Yes.
[crosses it off] Acid bath?
Cain
Mmm-hmm.
[crosses it off] Devoured by wolves?
Cain
Yes.
[getting exasperated] Dropped into helicopter blades?
Cain
Mmm-hmm. I've been trying to kill myself since the Bronze Age. I have tried everything. Even jumped into a volcano once.
What, you survived molten lava?
Cain
Yeah, it was a rough six months. Whatever I do, I just... regrow.
Like a blue-eyed, square-jawed tapeworm. So, if I cut you exactly in half, would there be two Pierces?
Cain
No. Only one side would heal. I call it the master molecule theory—
Yes, yes, Wolverine rules. I get it.
Cain
By chance, do you have any idea how annoying it is to be an immortal human being?
Cain
Oh, well, let me enlighten you. You see, first you get to watch everyone you love die, over and over. And that sucks. And on top of that, it's boring. I've been everywhere there is to go, I've tried every kind of food. Sex, music... Nothing surprises me anymore,
Have you tried Game of Thrones?
[Lucifer fights Cain, getting him in a wrist lock and trapping his knife hand]
I promised you…that I would find a way to kill you. [breaks Cain's wrist, forces his arm back to stab him with his own knife, and knocks him to the floor] I am a devil of my word!
Cain
[mortally wounded] Is Chloe okay?
She's fine. No thanks to you.
Cain
[struggling to breathe and laughing] Now that I'm dying, I don't know what I was so afraid of. I'm going to Heaven.
Cain
I told you, Lucifer, I don't regret anything I've done.
Yes. But, that was before you killed Charlotte Richards.
Cain
No. No, that was an accident.
Oh, you pulled the trigger. You ended her life. You chose to kill her. Deep down, you know you're a monster…and that you belong in Hell, where you will torture yourself with that truth for eternity. 'Cause no matter what you tell yourself…you can't outrun what you've done. [his eyes glow red and the skin on his face crackles with electricity] What you truly are.
Cain
And neither can you. [he laughs, gasps, and finally expires]
. . .
[Chloe walks in and sees Lucifer crouched by Cain's body]
[he rises and she finally sees his devil face for the first time, realizing…]