Moon Seung-ah was born on 20 September 2009 in South Korea. She is an actress, known for Past Lives (2023), Scattered Night (2019) and The Hill of Secrets (2022).

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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

Moon Seung-ah and Leem Seung-min in Past Lives (2023)

Moon Seung-ah and Yoo Ah-in in Voice of Silence (2020)

Moon Seung-ah, Lee Ka-eun, Yoo Ah-in, and Yoo Jae-myung in Voice of Silence (2020)

Moon Seung-ah and Lee Ka-eun in Voice of Silence (2020)

Teo Yoo and Greta Lee in Past Lives (2023)

Yoo Ah-in and Yoo Jae-myung in Voice of Silence (2020)

Moon Seung-ah

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