Per Entertainment Weekly, Fillion will appear this coming April in the Brooklyn Nine-Nine role of Mark Devereaux, star of a Law & Order-type series star who offers to aid Jake (Andy Samberg) and Rosa (Stephanie Beatriz) when a crime occurs on his set.
ABC’s Castle got a more abrupt ending than cast and crew were necessarily expecting, but Brooklyn Nine-Nine may give Nathan Fillion a little closure.
For his part, Brooklyn Nine-Nine marks the latest in a number of post-Castle sitcom cameos for Fillion, including Modern Family and this past weekend’s Santa Clarita Diet.
The former Firefly star will guest star on the cop comedy’s fourth season in a role that should sound familiar to Richard Castle readers.