William Mapother

William Reibert Mapother Jr. (/ˈmeɪpɒθər/; born April 17, 1965) is an American actor, known for his role as Ethan Rom on the television series Lost and starring in the film In the Bedroom. He is also known for the film Another Earth.

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Filmography (79 Appearances)

The Leader

TBA

The Possession at Gladstone Manor

TBA

Suits LA

2025

Outlaw Posse

2024

Black Girl Missing

2023

On Sacred Ground

2023

Son of Monarchs

2021

A Little Dream

2021

9-1-1: Lone Star

2020

FBI: Most Wanted

2020

MacGyver

2016

Tell Me How I Die

2016

Rush Hour

2016

Supergirl

2015

Minority Report

2015

Powers

2015

Blackhat

2015

The Atticus Institute

2015

Constantine

2014

American War Generals

2014

I Origins

2014

Drew Peterson: Untouchable

2014

The Blacklist

2013

Escape from Polygamy

2013

Underdogs

2013

Jobs

2013

It's Dark Here

2013

Static

2012

FDR: American Badass!

2012

Darnell Dawkins: Mouth Guitar Legend

2012

A Warrior's Heart

2011

Grimm

2011

American Horror Story

2011

Edwin Boyd: Citizen Gangster

2011

Another Earth

2011

Portraits in Dramatic Time

2011

Hawaii Five-0

2010

Justified

2010

Human Target

2010

Hurt

2009

Celebrity Ghost Stories

2009

Castle

2009

The Mentalist

2008

The Burrowers

2008

Viva Laughlin

2007

K-Ville

2007

Moving McAllister

2007

Mad Men

2007

Burn Notice

2007

Moola

2007

World Trade Center

2006

The Lather Effect

2006

Ask the Dust

2006

Criminal Minds

2005

Threshold

2005

The Zodiac

2005

The Inside

2005

Lords of Dogtown

2005

The Grudge

2004

Lost

2004

Suspect Zero

2004

NCIS

2003

The Kiss

2003

CSI: Miami

2002

Minority Report

2002

The Pennsylvania Miners' Story

2002

Vanilla Sky

2001

In the Bedroom

2001

Law & Order: Criminal Intent

2001

Crossing Jordan

2001

Swordfish

2001

CSI: Crime Scene Investigation

2000

Mission: Impossible II

2000

Magnolia

1999

Law & Order: Special Victims Unit

1999

The Unknown Cyclist

1998

Without Limits

1998

Touched by an Angel

1994

Born on the Fourth of July

1989 Debut
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