Mary Ann Hermansen was born on 8 November 1966 in Los Angeles, California, USA. She is an actress and producer, known for The Rookie: Feds (2022), Why Women Kill (2019) and It's Always Sunny in Philadelphia (2005).

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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

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Streaming Stars, Then and Now

Danny DeVito, Charlie Day, Rob Mac, Kaitlin Olson, and Glenn Howerton in It's Always Sunny in Philadelphia (2005)

Sheryl Lee Ralph and Mark Curry in One Love (2014)

Mary Ann Hermansen

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