Seamus Sullivan is known for Titus and Dronicus (2016), Confab (2012) and WRNG in Studio City (2013).

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"The Gentlemen" and "Slow Horses" return this fall, while the "Reacher" spin-off series "Neagley" makes its debut. See our guide of the biggest Fall TV and streaming releases.

2026 Fall TV and Streaming Watch Guide

&quot;The Gentlemen&quot; and &quot;Slow Horses&quot; return this fall, while the &quot;Reacher&quot; spin-off series &quot;Neagley&quot; makes its debut. See our guide of the biggest Fall TV and streaming releases.

Get a closer look at these actors from their many TV and streaming series roles.

Streaming Stars, Then and Now

Matt MacNelly, Zehra Fazal, and Corey Walter Johnson in Titus and Dronicus (2016)

Alex Cohen, Tina Walsch, Brian Houtz, and Maureen Chesus in WRNG in Studio City (2013)

Seamus Sullivan(I)

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