Cast & creator
Seamus Dever
Best known for CSI: Crime Scene Investigation, CSI: Crime Scene Investigation, NCIS
Seamus Dever (born July 27th, 1976) is an American actor, best known for playing Detective Kevin Ryan in the television series Castle (2009).
Also known as: Séamus Patrick Dever , شیمس دیور, شیمس دِوِر
15
film credits
35
television credits
49
1995–2024 · acting roles
6.5
average across scored titles
Signature credits
Known for
Across film & television
Filmography (50)
Showing 50 of 50 credits
CSI: Crime Scene Investigation
Adam Gilford
2000CSI: Crime Scene Investigation
Drew Rich
2000
NCIS
Graham Thomas
2003NCIS
Gabriel LaRoche
2003
The Rookie
Chaz Bachman
2018
Castle
Kevin Ryan
2009
NCIS: Los Angeles
Alexi Goncharov
2009
CSI: Miami
Paul Billings
2002
JAG
Caden Duran
1995
Charmed
Mitchell Haines
1998
Mad Men
Chuck
2007
CSI: NY
Charles Cooper
2004
Without a Trace
Ronald Phelps
2002
Ghost Whisperer
Rich Henderson
2005
Crossing Jordan
Tom Murch
2001
Cold Case
Hank Dempsey
2003
Tracker
Max Miller
2024
MacGyver
Griggs
2016
Titans
Trigon
2018Titans
Trigon / Captain Frank Finney
2018
Army Wives
Dr. Chris Ferlinghetti
2007
Drop Dead Diva
Tyler Mack
2009
Close to Home
Justin Matthews
2005
NCIS: Hawaiʻi
Scott
2021
Undressed
Randy
1999
Legion
Don Eichman
2017
Hunters
Tomasz Arndt
2020
Dark Blue
Nick Perry
2009
True Lies
Reed
2023
Kung Fu
Max DeVeer
2021
Threshold
Agent Detoro
2005
Pensacola: Wings of Gold
Lewis
1997
Waco: The Aftermath
Andy the German
2023
Take Two
Todd Garlin
2018
Invitation to a Murder
Lawrence Kane
2023
Hollywoodland
Phillip
2006
She's No Angel
Cricket
2002Bosch: Start of Watch
Officer Hastings
Outside the Law
Rick Michell
2002
A Great Divide
Ranger Tom Drake
2023
Nikki and Nora
Officer Paul Cordone
2004
Awaken
Henry Viser
2020
Mystery Woman: Snapshot
Billy
2005
Ready or Not
Marc
2009
McBride: The Doctor is Out...Really Out
Allen
2005
Monkey Love
Aaron Miles
2002Shooting LA
Colin
2001
Mindgame
Ray
2017Mindgame
Executive Producer
2017
The Black
Dr. Simon Carver