What was the truth about William?
That was finally revealed on This Is Us Season 1 Episode 16 when William opted to open up to his son about his life.
This all happened on a trip to Memphis.
With William's health deteriorating, Randall knew he needed to find out as much as he could before it was too late.
Did this serve as William's final episode on the series?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.