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James Hibberd
October 06, 2011 AT 04:30 PM EDT

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 in the eighth episode of Chuck‘s final season as “Kieran Ryker,” 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 and are now both 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.

Read more:

‘Chuck’ casting news: Time to meet Sarah’s mom!

‘Chuck,’ ‘Grimm’ premieres pushed back one week

‘Chuck’ final season promo teases the final (awesome) chapter — VIDEO

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