CASTLE: Michael Mosley’s 3XK Books a Return

He’s back!

A rep for ABC has confirmed that Michael Mosley (Jerry Tyson/3XK) will return for CASTLE’s February sweeps two-parter. His return coincides with the return of 3XK’s disciple, Dr. Nieman (Annie Wersching).

Last viewers saw serial killer 3XK, Castle had shot him, and Tyson had fallen off a bridge…presumably to his death. But as CASTLE creator Andrew Marlowe teased about 3XK’s potential return, “Let’s say it’s an arrow in my quiver and we’ll see what happens.”

The news was first reported by EW.com.

Are you excited for more 3XK on CASTLE?