Watch the official "This Is The One" clip from This Is Us Season 6 Episode 18.
The NBC drama series stars Milo Ventimiglia, Mandy Moore, Sterling K.
Brown, Chrissy Metz, Justin Hartley, Susan Kelechi Watson, Chris Sullivan, Jon Huertas, Alexandra Breckenridge and Gerald McRaney.
This Is Us Season 6 is streaming now on Peacock!
