Seamus Dever
Acting
47
Acting Credits
Biography
Seamus Dever (born July 27th, 1976) is an American actor, best known for playing Detective Kevin Ryan in the television series Castle (2009).
Known For
Filmography
Tracker
2024
as Max Miller
A Great Divide
2023
as Ranger Tom Drake
Invitation to a Murder
2023
as Lawrence Kane
True Lies
2023
as Reed
Waco: The Aftermath
2023
as Andy the German
NCIS: Hawaiʻi
2021
as Scott
Kung Fu
2021
as Max DeVeer
Awaken
2020
as Henry Viser
Hunters
2020
as Tomasz Arndt
The Rookie
2018
as Chaz Bachman
Take Two
2018
as Todd Garlin
Titans
2018
as Trigon
Titans
2018
as Trigon / Captain Frank Finney
Mindgame
2017
as Ray
Legion
2017
as Don Eichman
MacGyver
2016
as Griggs
Ready or Not
2009
as Marc
Castle
2009
as Kevin Ryan
NCIS: Los Angeles
2009
as Alexi Goncharov
Drop Dead Diva
2009
as Tyler Mack
Dark Blue
2009
as Nick Perry
Mad Men
2007
as Chuck
Army Wives
2007
as Dr. Chris Ferlinghetti
Hollywoodland
2006
as Phillip
McBride: The Doctor is Out...Really Out
2005
as Allen
Mystery Woman: Snapshot
2005
as Billy
Threshold
2005
as Agent Detoro
Ghost Whisperer
2005
as Rich Henderson
Close to Home
2005
as Justin Matthews
Nikki and Nora
2004
as Officer Paul Cordone
CSI: NY
2004
as Charles Cooper
Cold Case
2003
as Hank Dempsey
NCIS
2003
as Graham Thomas
NCIS
2003
as Gabriel LaRoche
Monkey Love
2002
as Aaron Miles
She's No Angel
2002
as Cricket
Outside the Law
2002
as Rick Michell
CSI: Miami
2002
as Paul Billings
Without a Trace
2002
as Ronald Phelps
Shooting LA
2001
as Colin
Crossing Jordan
2001
as Tom Murch
CSI: Crime Scene Investigation
2000
as Adam Gilford
CSI: Crime Scene Investigation
2000
as Drew Rich
Undressed
1999
as Randy
Charmed
1998
as Mitchell Haines
Pensacola: Wings of Gold
1997
as Lewis
JAG
1995
as Caden Duran