Sebastian Treacy is known for Time Agent (2008), Doctor Who: The Ultimate Conflict (2014) and Doctor Who: The 11th Regeneration (2007).

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The Biggest Movies and TV Coming in September

"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

Dan the Cyborg / Dan / Aliens / Dan The Cyborg / Zakatron #1 / Venator / Bob / Zakatron / Flower Alien

Sebastian Treacy(I)

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