The season finale ends with whisper that says: Get out.

You’re not welcome here.

The season finale forThe Americansstarts with a stakeout of Williams apartment.

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Credit: Ali Goldstein/FX

And Philip is walking into a trap.

From there we cut to Paige, reading a Spanish textbook in her bedroom.

Elizabeth comes in and crawls into bed with her.

Paige asks, If were in danger …

If things can happen … Maybe I need to learn how to defend myself.

Shes thinking about the assailant she watched her mother kill in a dark parking lot.

I can teach you a few things, Elizabeth says.

Elsewhere, the noose tightens around William as he goes for his late-night stroll.

Theres no escape, however, and rather than surrender outright, William makes a fatal choice.

By offering up his own life, he may have just saved Philips.

I suggest you dont move!

You might want to get me to a hospital with a bio-containment treatment facility as soon as possible.

Philip returns home and tells Elizabeth that William didnt show.

Given Williams earlier squeamishness about delivering the virus, he isnt sure whether he simply flaked or was captured.

Stan didnt come home tonight, Elizabeth says.

Theres an alternate meet-up planned for William the next day.

Elizabeth tells Philip that she told Paige about Smolensk.

Do you ever wonder what it looks like now?

It could be totally different.

Probably not that much, he says.

From there, we shift back to Mother Russia and a hospital of some sort a mental ward.

A young patient there named Semenov Mikhail (nicknamed Mischa) is brought before an official.

You are lucky to have such important friends, he says.

Im not sure who they are either.

Frankly, I think they just found out you were here.

How do you like it?

You know this is against the law, the official says.

Only a criminal or a mentally ill person would talk like that.

His evaluation is nearly complete.

A determination of being insane would lead to his detention for up to eight years.

The young man agrees.

Those powerful friends he doesnt know about?

It must be the KGB.

This is Philips illegitimate son.

Thanks to his fathers faithful service, the party is looking out for his other interests.

They ask if theres anything they can do to make him more comfortable.

Im a dead man.

Its a very unusual feeling.

Would you like a Coke?

At least William gets a hacking laugh out of that.

Zotov tells him domestic service is boring.

Ill be all right, Oleg assures him.

Youre a good son, Zotov says.

I guess we should all go visit them, Elizabeth says.

All three of us?

Henry too, Elizabeth says.

Is it too soon?

How soon did you have visitors after having me?

I didnt have many friends, so… (God, thats sad.

A new mother who has no one to share her new baby with.)

The life of tradecraft has caught up with him.

Every morning I wake up with this sick feeling in the pit of my stomach, he says.

The EST director asks him why he doesnt quit, but of course, Philip cant explain.

When he says I cant, it sounds like a cop out.

In his case, its true.

I hadnt thought about it like that, Philip said.

He bitched and moaned and was an asshole…

I guess its possible.

Hes been here, Gabriel says of the safe house.

She left a package for his son.

Your mother sent it to me for safekeeping before she was arrested, the old man says.

It seems she did break ties and heres why one cant just quit the job.)

The package has passport documents and stacks of cash.

Her son wants to know why she ran.

Her father doesnt know.

What was he like?

He was a boy.

Like you … She loved him.

The boy is planning to find him.

And his mother said she would leave him instructions.

He knows the man is a travel agent in America.

This is surely a plot thread that well be following well into Season 5.

It seems Philip is being searched for by someone besides the FBI.

Back in the States, Arkady Zoltov is told about Williams capture.

He thinks hes got them.

President Regan expects your country to keep to the treaties it signed.

And he will be bringing this episode up with Andropov shortly.

That would be Yuri Andropov, general secretary of the Communist Party at the time.

They slide a piece of paper across the table.

Hes being expelled from the country.

All of the accusations are true, including the last one: You killed Frank Gaad.

Hes got hemorrhagic fever already.

Stan and Aderholt ask if theres anyone William would like them to contact.

After so many years in your country as your unwelcome guest, there is no one, William says.

Besides, anyone who needs to know … knows.

They dont know if youve told us anything, Stan says.

No, William agrees.

They dont know that.

Aderholt asks William if he liked his work.

It was exciting, William says.

I was committed to something.

And I was invisible.

To us, Aderholt says.

To everyone, William says.

That made me feel special.

Like I was the star of my very own movie.

… My secret power, as it were, became a curse.

Id reach out to people, not friends, exactly.

Maybe acquaintances, more like.

But there was always a distance.

A barrier…

Hes rambling.

The absence of closeness makes you … cry … inside, William says.

But still committed, Stan says.

It was the only thing I had left, William tells him.

NEXT: Gabriel has shocking advice for Philip and Elizabeth …

Elizabeth and Stan meet with Gabriel.

Theyre worried that William might be turning on Philip.

If William talks to the FBI, its risks on top of risks, Gabriel says.

I think you two and your children should return home.

Philip, your heart hasnt been in this for a long time, Gabriel says.

Elizabeth, youve been doing this for over 20 years.

The job wasnt meant to be forever.

So the Center wants us to pack our bags and come home?

Youve had a good, long tour, Gabriel says.

The Center would welcome you back with honors the moment you said you were ready.

But with William under arrest, youre in immediate danger.

I know youve always been in danger.

But I think its time.

He tells them to go home, get their kids, and get themselves to a safehouse.

But of course, he adds, its your decision.

Elsewhere, we see Paige visiting Pastor Tim and Alice and holding their newborn at the hospital.

(I kinda wonder if William is in some sealed basement room in the same facility.)

Tatiana tells Oleg not to bother him.

Its a shock, she says.

He was a good man.

Hes not dead, Oleg tells her.

Oleg hesitates, then tells her hes transferring back to Moscow to be closer to his family.

Youre a good son, she says.

Its the second time hes been told that.

Blood spills from his mouth as he babbles.

They … always wanted more … information … of samples …. they wanted me married, he says.

I wish I couldve been with her for all these years.

A couple kids … William goes on.

The American dream … Never suspect them … Shes … pretty.

At the Jennings house, Henry is watching the Super Bowl alone.

Philip and Elizabeth go upstairs to talk.

Across the street, Matthew is watching the game with Paige.

He talks about distance with his father, and the affair his father had.

In a way its good, right?

Seeing them as people?

Paige says, grasping for a silver lining.

Sometimes, dont you wish you could go back to being a little kid again?

I dont know, Matthew says.

I used to think my dad was having an affair at work, Paige says.

He was working late a lot.

I asked my mom about it.

She said no, she trusted him.

But theyre just people and … s happens, you know?

The two lock eyes.

Then they lock lips.

Matthews hands start creeping under her blue Freddy Krueger sweater.

Philip and Elizabeth sit quietly in their room.

You want to pack?

Get the hell out of here?

Maybe, his wife says.

Are you trying to picture them there?

Across the street, Stan comes home.

Hasnt been watching the Super Bowl, Philip says.

Work must be busy.

Elizabeth sends her husband to retrieve Paige.

When he does, Stan is giddy at having caught Matthew and Paige making out.

Father of the bride youre paying!

you’ve got the option to use my backyard if you want to.

Philip isnt feeling it.

Okay, lets go, sweetie, he says.

Bye, she tells Matthew, abruptly.

Stan sets a racquetball match for Tuesday.

You bet, Philip says.

As they cross the street, Philip tells his daughter, I dont want you to see him.

Dont do this… You have no idea.

Almost like hes ready to run.

And thats where things end dangling off a cliff.