"This is Us" has quickly become one of the most popular, and beloved, shows on television today -- so much so, in fact, that fans wait in anticipation every week to find out what will happen to their beloved Pearson family members. Now, however, Milo Ventimiglia – who plays Jack Pearson, the patriarch of the family – is preparing "This is Us" fans for an emotional episode. Could this be the night we see what finally happens to Jack Pearson, and find out how he died?

Milo Ventimiglia: 'Just in case you need a note after tonight's 'This is Us' episode'

On his Twitter last night, Milo shared a picture of a hand-written note that he wrote for people who would be overly affected by tonight's episode of the show.

It sounds like this episode of "This is Us" will prove to be just as emotional as last week's – and every week before and since.

In tonight's episode, Randall (played by Sterling K. Brown) and William (played by Ron Cephas Jones) will be travelling to Memphis to go on a bonding trip of sorts...

and this trip might be the last trip they ever take together.

As fans of "This is Us" know, Randall was adopted by the Pearson family after their third child, Kyle, died during childbirth. Randall was left at a fire station by his father, who was a severe drug addict, and thus couldn't properly care for him. While Jack and Rebecca (played by Mandy Moore in a Golden Globe nominated role) did a good job with raising Randall, tensions arose between Rebecca and Randall when he discovered that she not only knew where William was for all these years but denied him the right to see Randall as he was growing up.

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While that seems to have been smoothed over, there's no question that, in the coming episodes of "This is Us," we're going to see Randall face the reality of his biological father's passing. This, too, will be especially emotional for Randall, because it will be the second time that he's lost his father – the first time when Jack passed and the second time now.

"This is Us" airs every Tuesday at 9:00 p.m. EST on NBC.