The This Is Us season 1 finale airs tonight on NBC, and here's how you can watch it live online.

This Is Us has become nothing short of a sensation, ranking as the most-watched new show of the 2016-17 TV season, sometimes topping the charts in the 18-49 demographic. The combination of a strong cast, relatable storylines and tearjerking moments has kept viewers hooked on the Pearson family.

The family drama is now heading into its final episode of season 1, titled "Moonshadow". Viewers last saw Kate (Chrissy Metz) reveal to Toby (Chris Sullivan) that her father Jack (Milo Ventimiglia) died because of her. The final scene of the penultimate episode featured a tipsy Jack calling Kate while driving, reassuring her that he was going to mend his relationship with Rebecca (Mandy Moore).

"Jack heads to Cleveland to make things right with Rebecca on the night of her first big gig with the band," reads the NBC synopsis for the finale. "Then, Randall [Sterling K. Brown], Kate and Kevin [Justin Hartley] make big decisions about their futures."

Ventimiglia has already revealed that Jack's death won't be featured in the finale, though it's possible that fans will finally learn exactly how it went down, even if it's merely a suggestion. Moore told Variety recently that the finale was going to "destroy America."

"We're going to destroy America by the end of the season. As if they don't have enough to be upset about at this point in time anyway," she said. "But they're going to be upset for a completely different set of reasons."

The season 1 finale of This Is Us begins Tuesday night at 9/8c on NBC. If you're not able to watch the finale on television, you can live stream it in select markets (New York, Los Angeles, Chicago, Dallas-Fort Worth, Hartford, Miami, Philadelphia, San Diego, Washington D.C.) at NBC.com. Select markets are also able to access the live stream through SlingTV.

The This Is Us finale will be available to watch on NBC.com, the NBC app and Hulu by Wednesday morning.

To live tweet and follow along with others watching the This Is Us season 1 finale, use hashtag #ThisIsUs on Twitter.

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This is us, Nbc, Television, Live stream