In October 2006, he moved to the United States. Sam Underwood helped to establish the Fundamental Theater Project in New York alongside Nicola Murphy in April 2010.

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Co-featuring close by Aidan Quinn, Virginia Madsen, Zosia Mamet, Nat Wolff, Joshua Bowman, and Olympia Dukakis, he showed up as Oliver Sands in the 2013 American dream film The Last Keepers.

In 2013, Sam Underwood assumed the common part of Leo Carras in the reconnaissance thrill ride TV series Homeland.

🐌 💨

Attn: @BikeWorcester and friends 🙃 https://t.co/v9Cnog2rUn pic.twitter.com/RtkpBC65sc

— Sam Underwood (@misterunderwood) February 4, 2022

He was given a role as Luke and Mark Gray, Lily’s psychopathic twin children, in the mental wrongdoing spine chiller TV series The Following from 2014 to 2015.

Sam Underwood showed up as Leocadia in the 2017 melodic film Hello Again, in view of the Off-Broadway Musical of a similar name by Michael John LaChiusa.

He rejuvenated the personality of Jeremiah “Jake” Otto Jr., Jeremiah’s moralistic and smarter child, in the dystopian loathsomeness dramatization TV series Fear the Walking Dead in 2017.

In 2019, he began showing up as Adam Carrington/Dr. Mike Harrison, Blake and Alexis’ most seasoned child who was abducted as a baby, in the TV drama Dynasty.

— Sam Underwood (@misterunderwood) February 4, 2022

Sam Underwood’s venue credits remember playing Alan Strang for Equus at John Drew Theater in 2010, Marchbanks in Candida at Irish Repertory Theater in 2010, Lumbard in Veritas at HERE Arts Center in 2010, Hamlet in Hamlet at the Edinburgh Festival in 2011, and Dorian Gray in The Picture of Dorian Gray at The Pershing Square Signature Center in 2012.

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