(CNN) Warning: This story contains spoilers about the recent episode of "This Is Us."

Tuesday's episode of NBC's "This Is Us" reminded viewers why the show is the unrivaled champion of tear-soaked television.

The hour, titled "Memphis," took viewers on a road trip with Randall (Sterling K. Brown) and his cancer-striken biological father William (Ron Cephas Jones). Their destination? Tennessee, where William was looking to reconnect with his past as his body began to fail him.

By the end of the episode, William would thank his son again for finding him and take his last breath.

"I remember us walking out of the building after the first read, and each of us were waiting for one of us to confirm what we'd just read," Jones said of his reaction to the heart-tugging script. "It was this feeling of, 'There's something special here, and I don't know if it's real or not.'"

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