Katiana Castelnau is known for Signature (2011), Marmaille (2024) and Cut (2013).

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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

Sandrine Bonnaire, Sami Bouajila, and Georges-Henri Mauchant in Signature (2011)

Ambroise Michel, Edouard Montoute, and Camille Lherbier in Cut (2013)

Katiana Castelnau

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