Siân O'Byrne is known for Firefly Lane (2021), Have You Heard Judi Singh? (2025) and Girl Haunts Boy (2024).

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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

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Katherine Heigl, Sarah Chalke, Roan Curtis, and Ali Skovbye in Firefly Lane (2021)

Peyton List and Michael Cimino in Girl Haunts Boy (2024)

Rob Lowe and Kristin Davis in Holiday in the Wild (2019)

Siân O'Byrne

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