According to TV Line, which first broke the news Thursday (Aug. 22), the veteran actor will play the recurring role of Barry, a trusted friend of Ryan Hardy (Kevin Bacon).
The news comes just two weeks after the series added Sam Underwood, who has appeared on the current season of "Dexter" as Zach Hamilton. He'll play Luke, a complicated and dangerous young man who may be a follower of Joe Carroll (James Purefoy).
Other recent cast additions include James McDaniel ("NYPD Blue") as an FBI agent, Connie Nielsen ("Boss") as Ryan's new love interest, Jessica Stroup ("90210") as an NYPD intel specialist and niece of Ryan, Tiffany Boone ("Beautiful Creatures") as the newest member of Joe Carroll's cult, and Valerie Cruz ("Homeland") as an NYPD detective.
Carradine's other TV credits include "Deadwood," "Dollhouse," "Damages" and "The Big Bang Theory."
"The Following" returns for Season 2 in January 2014 on Fox.