Agent swap! White Collar star Tim DeKay is set to play a different kind of government agent on NBC’s Chuck.

DeKay, who’s an FBI agent on the USA drama, will guest star as “Kieran Ryker” in the eight episode of Chuck‘s final season as Sarah’s former CIA handler — a stoic, unflappable man who forces her to “confront her past and the choices she’s made.”

The actor joins a host of geek-friendly guest names for Chuck‘s home stretch, including Mark Hamill as a villain, Carrie Anne-Moss as a love interest for Casey, Community actor Danny Pudi and comic book legend Stan Lee.

Remember Chuck. along with new NBC series Grimm, were pushed back a week from their original premiere date, and now both are set to debut on Friday, Oct. 28. The premieres are being billed as part of two nights of Halloween-themed programming, starting with special episodes of NBC’s Thursday night comedies, Community, Parks and Recreations, The Office, and Whitney.

[ EW ]