Thats ridiculous, sniffs Matt, when Nora tells him that story behind the explosion.

[The Book of]Revelationsis not supposed to be taken literally.

Seven-headed monster its a metaphor.

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Credit: Ben King/HBO

About a seven-headed monster that threatens to destroy the world.

There are seven of them.

A seven-headed monster, if you will.

And each of them is bubbling with self-fulfilling prophecies, either on a personal or doomsday level.

What if one of them destroys the world in his effort to save it?

In Certified, Laurie faces a reckoning.

Laurie downs a handfuls of pills and pens a suicide note.

She parrots the same line her hurting patient said to her: Tell me what to do.

Cue up Gravediggazs track 1-800 Suicide.

Like the pigeons Nora/Sarah delivers in the near-future?).

Instead, Laurie carefully plays along.

Whatever is happening here, she says, I want to be a part of it.

Once inside, Kevins self-anointed apostles break down their mission.

Grace explains her horrible misunderstanding that led to the drowning of the Australian police chief named Kevin.

Wow, so everybody wants something: a brain, a heart, courage, Laurie jokes.

Kevins in the Emerald City.

Hes the one thats going to give it to you.

All right, Dorothy, lets have it, Chief responds, testing her.

Tell us were lunatics.

Yeah, it sounds crazy, she says, buying time.

But these are crazy times, huh.

After the ferry ride, Laurie, Matt, John, and Michael found Nora in Melbourne.

It sure seems like an elegant way to kill yourself, Laurie notes.

No, no, Nora answers, making like shes given every such option plenty of consideration.

Food for thought, thinks Laurie, whos scuba certified, by the way.

I know suicidal when I see it.

Matts nose is still bleeding, so it looks like lion-snack David Burton didnt cure the reverends cancer.

Nora is feisty and frazzled, in total honey badger mode.

But Nora isnt calling in the DSD to arrest these frauds.

Even young Matt got into the act, smiling and smacking the inflated sphere.

He just ruined it for all of them, she says, tears running down her face.

Why would he want to do that job?

Lauries deliberate response is, I think, more important than Noras story.

In this much larger game thats unfolding, Laurie is the usher, isnt she?

Nora says goodbye, asking Laurie not to tell Kevin and the others what she intends to do.

Matt opts to stay with her.

He doesnt realize that Michael was the one who contacted her and gave her the address to find them.

John cant deny that he believes Evie is out there, alive somewhere.

I will play the part of Peter, he says proudly.

But everyone else seems pleased to play along even Laurie.

That would make me Mary Magdalene.

Chief corrects her, saying Nora is technically Magdalene in this scenario.

Im not Thomas, she answers.

Doubting is easy because doubting costs you nothing.

But Judas, he was surrounded by people going on and on about how special Jesus was.

But he betrayed him anyway.

Michael points out that Judas betrayed Jesus for 30 pieces of silver and then hanged himself.

Did he leave a note?

Laurie says, kind of as a joke.

And just like that, Chief falls face-first into his food.

Shes waiting for him on the steps when he arrives on his horse.

He has returned like the responsible husband/son/policeman that he is, just as Laurie predicted.

They agree that neither wanted another baby, which somehow kills all the good vibes.

Hes not scared, and in fact, he almost seems excited by what awaits him.

Not only that, but he believes it could work.

He believes this might actually work.

Perhaps she intended to help Kevin escape if he had doubts as the moment of truth neared.

Shes not going to be the killjoy usher who squeezes the air out of the ball.

Laurie leaves peacefully, gifting Kevin the lighter.

At the end of their conversation, Kevin mentions Nora one last time.

he asks, knowing for certain that she chased after the physicists.

Wereallgone, Laurie responds, in what might be the shows epitaph.

The next morning, Laurie cruises through the harbor as clouds threaten.

She found a boat captain to race her out to scuba-diving depth before the big storm hits.

Before she can dive in, Jill calls.

She sheds some quiet tears, says goodbye, and hangs up.

Miss, says the stern captain, now or never.

Certified Laurie gears up and disappears over the side.

Theres no music as the episode concludes, just the sounds of the water against the boat.

But Damon Lindelof isnt one for such easy answers, Im afraid.

Laurie rests forever Down Under in Oz, as neither Dorothy nor the Wicked Witch.