CSI fans have not seen the last of Nate Haskell. And neither has Dr. Raymond Langston.

Producer Carol Mendelsohn tells TV Line that Bill Irwin will reprise the role of this serial killer, who was last seen breaking out of prison on February 17.

What will lead to Haskell's final showdown with Langston? Mendelsohn won't say. But she did tease:

“Breaking out of jail was only the beginning. As Haskell warned, he’s always five steps ahead of our CSIs, until he’s not...”