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Seamus Patrick Dever
July 27, 1976
Dever was born in Flint, Michigan, and moved at the age of 6 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 the future Juliana Dever on May 27, 2006. Juliana played Jenny Ryan, Ryan's wife, on Castle. He is a cousin of Broadway actress Jeanne Arnold and Canadian singer-songwriter Feist.
Dever also starred in a celebrity episode of The Chase (American game show), Season 3 (2014), where he scored 11 questions in the preliminaries, and led a team with Dean Cain to defeat the Chaser, Mark Labbett.
|2002||Monkey Love||Aaron Miles||Credited as Séamus Dever|
|2002||Outside the Law||Rick Michell|
|2008||Affairs in Order||Cyrus|
|2008||The Essence of Depp||Dylan|
|2009||Ready or Not||Marc|
|2015||The Extraordinary Farewell||H. Henry Locke|
|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|
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"|
|2019||The Rookie||Chaz Bachman||Episode: "The Bet"|
|2020||NCIS: Los Angeles||Alexi Gonchgarov||Episode: "Russia, Russia, Russia|
|2002||Soldier of Fortune II: Double Helix||Additional voices|
|2018||Far Cry 5||John Seed|
- "Q&A with Flint-born Seamus Dever, a.k.a Det. Kevin Ryan on ABC's "Castle"". mlive. February 27, 2012. Retrieved June 10, 2020.
- "Biography - Seamus Dever | The Official Site". November 11, 2018. Archived from the original on November 11, 2018. Retrieved June 13, 2020.
- "Castle's Seamus Dever Compares His Real Wedding to His TV Wedding".
- Matt Richenthal (January 6, 2012). "Seamus Dever on Castle wedding episode, grappling over donuts". TVFanatic.com. Retrieved February 25, 2013.
- "Seamus Dever's Twitter". October 4, 2011. Retrieved February 25, 2013.
- "An Actor of Character". Vegetarian Times. 38 (396, number 8): 20. September 2012.