The Person of Interest actress has previously appeared as April O'Neil in Teenage Mutant Ninja Turtles II & III, NYPD Blue, and Party of Five.
Turco, 48, will play Linda, the wife of the show's lead, Special Agent Pride, portrayed by Scott Bakula. The two will be joined by Sons of Anarchy's CCH Pounder, JAG's Zoe McLellan, and 42's Lucas Black. The show may be something of a homecoming for McLellan, as the original NCIS is a spinoff of JAG itself.
The original NCIS has been very popular since the show's debut in 2003, and already has one spinoff, NCIS: Los Angeles. NCIS: Los Angeles debuted in 2009, and stars LL Cool J and Kinsey actor Chris O'Donnell. The original NCIS was TV Guide's number one highest-rated TV program in 2012-2013, with NCIS: Los Angeles not far behind at number four.
NCIS: New Orleans is scheduled to air this spring.