WhenThis Is Usreturned to the air after a two-month hiatus, everyone had Rebeccas brain in mind.

They would come, in the form of a (preliminary) diagnosis: mild cognitive impairment.

Whos this not-so friendly visitor?

How will rattled Randall respond?

What lies ahead for Rebecca?

Does Sophie loom ahead for Kevin?

ENTERTAINMENT WEEKLY: Randall is an overwhelmed, overworked councilman, father, and son.

Hes battled anxiety attacks throughout his life, and he downplayed Beths concern about him a few episodes ago.

That relationship is so important to him.

Now hes returned home from this emotional trip, and theres a man standing in his kitchen.

This cliffhanger seems headed in a different direction than that of family drama.

And I would hope that audiences trust that were not going to have Randall murdered in his own home.

Rebecca was diagnosed with mild cognitive impairment.

That said, we saw a little moment.

We havent seen very much of how Rebecca ends up.

So were pretty much along the ride with our characters.

So were just really, really trying to be accurate.

The doctor mentioned blood tests and MRI.

Weve talked about memory being a critical element of the show.

And here we see Rebecca staring into the mirror, reflecting on some memories.

And thats one of my favorite moments of the episode, where the sparks are literally flying.

How much guilt does Miguel feel that he overlooked the signs?He definitely feels guilty.

How could I have chalked this up to just a senior moment?

I dont think it was that Miguel wasnt attuned, hes an incredibly present husband.

Lets talk about Toby and Kate.

It was exciting moment for both parents, but then Kate turned a bit somber.

Why cant he accept our son and his sight limitation?

Their relationship has a lot of love and good intentions at its core.

But Kate and Toby seem to have a fundamental problem of connecting on the same wavelength.

They always seem a bit off.

Theres a fundamental difference in how Kate is able to fully invest and accept, This is my son.

I love him for exactly who he is and what his abilities are.

And Im going to be the best parent and give him the best life possible.

And thats a really scary disconnect.

Is the third time a charm?

The hair color certainly matches Kevins son in the future.

[Laughs] She definitely seems to have the right genes for the mother of that future child.

Thats a really exciting throw-forward for us.

He told his brother, Im ready for a family.

Im ready to find the one.

Im ready for kids.

But if you remember the last time we saw Sophie, she is engaged to another man.

So its not quite so simple.

Unless the Billy Joel concert didnt go as well as youd think.

[Laughs] He definitely got a little excited and played his John Legend card.

I think youve got one of those in a lifetime.

How did John Legend key in your orbit?We just lucked out.

And it was actually Halloween day that we shot that scene.

And so we got everything set up.

We had him for exactly two hours.

He came in wardrobe, could not have been more of a pro.

And she was super-excited.

[Laughs] So she was pretty excited, and we were lucky to have her.

How will Dave (Tim Matheson) react to this development?

Weve seen the less admirable sides of her character.

What is that all about?

And then what are the implications that this encounter will have on Randalls already fragile mental state?

And whats one adjective youd use to describe this episode?Tense.