Seamus Dever

• Name — Seamus Dever • Birth Name — Seamus Patrick Dever • Born — 27 July 1976 • Birthplace — Flint, Michigan, U.S. • Occupation — Actor • Years Active — 1999present

Dever was born in Flint, Michigan, and moved at the age of six to Bullhead City, Arizona, where he grew up. He graduated as valedictorian of Mohave High School, completed his undergraduate studies at Northern Arizona University, and holds MFAs in Acting from the Moscow Art Theatre and Carnegie-Mellon University.

A lifetime member of the Actors Studio, Dever married Juliana Dever on May 27, 2006. Juliana played Kevin Ryan's wife Jenny on Castle. He is a cousin of Broadway actress Jeanne Arnold and Canadian singer-songwriter Feist. Dever and his wife are vegetarians. Both are also supporters of Best Friends Animal Society. Dever also starred in a celebrity episode of the American version of The Chase, in Season 3 (2014), where he scored 11 questions in the preliminaries and led a team with Dean Cain to defeat the Chaser, Mark Labbett.

• Year — Title — Role — Notes • 1999 — Pensacola: Wings of Gold — Lewis — 1 episode: "Behind Enemy Lines" • 2001 — She's No Angel — Cricket — TV movie • 2001 — Undressed — Randy — 1 episode: "Episode #4.1" • 2001 — Crossing Jordan — Tom Murch — 1 episode: "Believers" • 2003 — Without a Trace — Ronald Phelps — 1 episode: "Moving On" • 2004 — Cold Case — Hank Dempsey — 1 episode: "The House" • 2005 — Mystery Woman: Snapshot — Billy — TV movie • 2005 — JAG — Caden Duran — 1 episode: "San Diego" • 2005 — Charmed — Mitchell Haines — 1 episode: "Freaky Phoebe" • 2005 — McBride: The Doctor Is Out...Really Out — Allan — TV movie • 2005 — Threshold — Agent Detoro — 2 episodes: "Trees Made of Glass: Part 2", "Blood of the Children" • 2005 — CSI: Crime Scene Investigation — Adam Gilford — 1 episode: "Bite Me" • 2006 — CSI: NY — Charles Cooper — 1 episode: "Live or Let Die" • 2006 — NCIS — Graham Thomas — 1 episode: "Singled Out" • 2007 — Close to Home — Justin Matthews — 1 episode: "Making Amends" • 2007 — CSI: Miami — Paul Billings — 1 episode: "Kill Switch" • 2008 — General Hospital — Dr. Ian Devlin — 45 episodes • 2008 — Mad Men — Chuck — 1 episode: "For Those Who Think Young" • 2008 — Army Wives — Dr. Chris Ferlinghetti — 7 episodes • 2008 — Ghost Whisperer — Rich Henderson — 1 episode: "Save Our Souls" • 2008 — CSI: Crime Scene Investigation — Drew Rich — 1 episode: "Young Man with a Horn" • 2009 — Drop Dead Diva — Tyler Mack — 1 episode: "The Dress" • 2009–2016 — Castle — Detective Kevin Ryan — Main cast 173 episodes Nominated – People's Choice Award for Favorite TV Bromance (shared with Jon Huertas) • 2010 — Dark Blue — Nick Perry — 2 episodes: "Dead Flowers", "Personal Effects" • 2012 — Chelsea Lately — Kevin Ryan in Castle — 1 episode: "Episode 6.187 (Himself playing his Castle character)" • 2014 — The Chase — Himself — 1 episode: "Starry Eyed: Celebrity Episode" • 2018 — Legion — Don Eichman — 1 episode: "Chapter 14" • 2018 — Take Two — Todd Garlin — 1 episode: "Death Becomes Him" • 2018–2019 — Titans — Trigon — Recurring 3 episodes • 2019 — Macgyver — CIA Officer Griggs — 1 Episode Mac+Fallout+Jack • 2019 — The Rookie — Chaz Bachman — Episode: "The Bet" • 2020 — NCIS: Los Angeles — Alexi Gonchgarov — Episode: "Russia, Russia, Russia" • 2023 — True Lies — Reed Kessler — Episode: "Honest Manipulations" • 2023 — NCIS: Hawai'i — Scott — Episode: "Nightwatch Two" • 2024 — Tracker — Max Miller — Episode: "Man's Best Friend" • 2024- — NCIS — Gabriel LaRoche — Recurring 3 episodes

• Year — Title — Role • 2002 — Soldier of Fortune II: Double Helix — Additional voices • 2018 — Far Cry 5 — John Seed • 2024 — Call of Duty: Black Ops 6 — Felix Neumann