Season 3 ofThis Is Uswasted little time in delving back into the Who is her?
(He was in a similar state in that not-so-distant flash-forward in theseason 2 finale.)
Randall asked Toby (Chris Sullivan).

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I dont know if I should, he responded.
She wants you to be there, said Randall.
What was running through Sullivans head when he first learned that Toby would factor into the flash-forward mystery?
Job security, he cracks to EW.
Thank god I survived to old age.
Hes an old Toby, so we now know hes in the future timeline.
The actor shies away from speculation that Katoby may be no more.
I cant say anything, one way or the other, he says.
Its a well-constructed storyline.
Thats a terrible idea, he says.
And were going to be watching him come undone throughout the beginning of the season.
Metz echoes this sentiment, noting that Tobys decision is primarily driven by the couples mutual angst.
Theres so much guilt they both have, and they both share, she tells EW.
Theyre both going through the same thing, but very differently.
Theyre trying to show up for each other, but its going to be challenging really, really challenging.
Almost as challenging as the ongoing guessing game about the identity of the mystery woman.
Theres no her thats off the table, declaresTIUexecutive producer Aptaker.
We had a very impassioned debate at dinner.
Its always going to be told through this one day or one night, says Aptaker.
So its something were going to get to sooner than later.
Adds Berger: Its that balance between fun-but-not-distracting and frustrating.
Were constantly walking that tightrope.
It sounds like the next clue may focus less on identity and more on predicament, though.
He hints: Its along the lines of what is it that led her to this situation?'
And as the puzzle pieces stack up, who knows?
So might the Kleenex boxes.
This Is Usairs Tuesdays at 9 p.m. ET/PT on NBC.