Mallory Siegenthaler is known for The Secret Heiress (2024), Return of the Gold King (2026) and At the Riverbank (2024).

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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

Dawn Donohue, Alexander Ray, Zoquera Milburn, and Kelsey Susino in The Secret Heiress (2024)

Mallory Siegenthaler

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