Youve been warned spoilers to follow.

Well, that was a shock.

(you’re free to read the full recaphere.)

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Credit: Liane Hentscher/The CW; Jason Merritt/Getty Images

ENTERTAINMENT WEEKLY: TheArkersknew a little about Polaris how much of what we saw in flashbacks did they know?

The circumstances around Polaris were not made public.

Weveheard about the13thstation a couple times throughout the series.

Was it always your plan to dothiswith Polaris?

Why did you decide to tell it through flashbacks?

Ultimately thats what we always want to do with flashbacks.

[These flashbacks dont] exist just to fill in some blanks in peoples minds.

Its actually a crucial bit of storytelling so that you’re free to understand where were going.

Now onto theotherbig thing that happened:Lexasdeath.

How hard was it to make that decision?

I loved Lexa more than anybody else does.

And to do that, to be reincarnated, first you better die.

And so that became the obvious endpoint for the story.

What was your thinking behind having Clarke andLexafinally sleep together… right beforeLexadies?

Well … [pause] … that was a hard one.

Any episode prior to now it would have been too soon in my mind.

It forces Clarke behind that line.

You dont know if its ever going to be the same again, so you have goodbye sex.

Its emotional, and its sad, and its lovely.

That was what we were going for.

In this case, it just so happened to be their first sexual encounter.

How willLexasdeath affect Clarke?

Shes going to be heartbroken.

Shes going to be devastated.

Clarke, the hero ofourstory, needs to figure out a way to do the same now.

Some of that is probably going to revolve around whom the next commander is.

These are stories that were going to tell going forward.

Should we be worried about Titus not honoringLexaslast wish to protect Clarke?

Sure, you’re free to worry about that.

He loved Lexa and was trying to in his own twisted way protect her and wound up killing her.

That is the tragedy of a guy who kills his own child.

And hes now going to have to bear the responsibility of that.

I think the greatest punishment of all for Titus will be the one he inflicts upon himself.

He is going to be broken, certainly.

Are you concerned about fan reactions toLexasdeath?

So as a storyteller/showrunner, I needed to weigh that against the story that were telling.

Hopefully, people can forgive me.

If they cant, I understand that, too.

With that being said, is this the last weve seen ofLexa?

Is Lexa in that piece of tech?

Is Lexa in the flame?

Is her mind in the flame?

These are questions that we will ask and answer this season.

The 100airs Thursdays at 9 p.m.

ET on The CW.