Garrett Kruithof, a native Louisianan, is a former hotel executive who began his career in film and television with a role on Memphis Beat. He has since appeared with roles in Burn Notice, Common Law, and Army Wives. Garrett's first feature film was "The Iceman", Garrett played, Stanley Kuklinski, the Polish father of the notorious serial killer, Richard Kuklinski (Michael Shannon).

Garrett has appeared in recurring roles as Assistant District Attorney Roy Stout on the Starz period piece crime drama Magic City and as Detective Jimmy Dufrene on the HBO series True Detective with Matthew McConaughey and Woody Harrelson.

Garrett starred as real life gangster Henry Methvin opposite Emile Hirsch and Holliday Grainger in Bonnie and Clyde, a mini-series that aired simultaneously on History Channel, Lifetime, and A&E in December of 2013 where it became the third most-watched basic cable miniseries of all time.

Garrett has attained "verified" status on Twitter where he maintains several thousand followers which he interacts with during live broadcasts of many of the television series that he has been a part of.