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

NCIS
2006
CSI: Crime Scene Investigation
2005
The Rookie
2019
Castle
2009
CSI: Miami
2007
NCIS: Los Angeles
2021
JAG
2005
Charmed
2005
Mad Men
2008
CSI: NY
2006
Without a Trace
2003
Crossing Jordan
2001

FILMOGRAPHY

All
Movies
TV
Acting
49
Producing
1
2024
Tracker
as Max Miller
2024
NCIS
as Gabriel LaRoche
2023
A Great Divide
as Ranger Tom Drake
2023
Invitation to a Murder
as Lawrence Kane
2023
NCIS: Hawaiʻi
as Scott
2023
Hunters
as Tomasz Arndt
2023
True Lies
as Reed
2023
Waco: The Aftermath
as Andy the German
2022
Kung Fu
as Max DeVeer
2021
NCIS: Los Angeles
as Alexi Goncharov
2020
Awaken
as Henry Viser
2019
The Rookie
as Chaz Bachman
2019
MacGyver
as Griggs
2019
Titans
as Trigon / Captain Frank Finney
2018
Take Two
as Todd Garlin
2018
Legion
as Don Eichman
2018
Titans
as Trigon
2017
Mindgame
as Ray
2010
Dark Blue
as Nick Perry
2009
Ready or Not
as Marc
2009
Castle
as Kevin Ryan
2009
Drop Dead Diva
as Tyler Mack
2008
Mad Men
as Chuck
2008
Ghost Whisperer
as Rich Henderson
2008
CSI: Crime Scene Investigation
as Drew Rich
2008
Army Wives
as Dr. Chris Ferlinghetti
2007
CSI: Miami
as Paul Billings
2007
Close to Home
as Justin Matthews
2006
Hollywoodland
as Phillip
2006
CSI: NY
as Charles Cooper
2006
NCIS
as Graham Thomas
2005
McBride: The Doctor is Out...Really Out
as Allen
2005
Mystery Woman: Snapshot
as Billy
2005
CSI: Crime Scene Investigation
as Adam Gilford
2005
Threshold
as Agent Detoro
2005
Charmed
as Mitchell Haines
2005
JAG
as Caden Duran
2004
Nikki and Nora
as Officer Paul Cordone
2004
Cold Case
as Hank Dempsey
2003
Without a Trace
as Ronald Phelps
2002
Monkey Love
as Aaron Miles
2002
She's No Angel
as Cricket
2002
Outside the Law
as Rick Michell
2001
Shooting LA
as Colin
2001
Crossing Jordan
as Tom Murch
2001
Undressed
as Randy
1999
Pensacola: Wings of Gold
as Lewis
The Black
as Dr. Simon Carver
Bosch: Start of Watch
as Officer Hastings