02/13/2013 05:52 pm ET

Nick Gomez Headed To 'Dexter' And More Casting News

From zombies to serial killers?

According to TVLine, "Walking Dead" actor Nick Gomez has booked a guest starring role on "Dexter" as a hit man named Javier. In the Season 8 episode of the Showtime drama, Gomez will become frustrated when Deb (Jennifer Carpenter) comes between him and his target.

In other casting news...

Katie Couric is stopping by "Nashville." The talk show host will appear on an upcoming episode of the ABC drama as herself to speak with Rayna (Connie Britton), but other details of her appearance are being kept under wraps. [E!]

Mike Vogel has landed the lead role in "Under The Dome." The "Pan Am" actor will appear on the CBS series as Barbie, a vet on a covert mission in Chester's Mill. [Deadline]

Eric Mabius is headed to "Scandal." The "Ugly Betty" alum will guest star on an episode of the ABC series to play Senator Peter Caldwell, a "member of a powerful political family who turns to OPA for advice from Olivia (Kerry Washington)." [THR]

Dexter Season 7 Photos