Jeri Ryan has nabbed a critical role on NCIS Season 12.

The veteran actress (Leverage, Body of Proof, Helix) will come on board television's highest-rated series as Rebecca, the never-before-seen third ex-wife of one Leroy Jethro Gibbs.

Says NCIS showrunner Gary Glasberg of the casting decision:

"After 12 seasons there was still one ex-wife to cast opposite Gibbs and we found her in the beautiful and talented Jeri Ryan. We’re all very excited to have Jeri join us for a storyline that’s chock full of surprises."

After taking a week off, NCIS Season 12 Episode 7 will air next Tuesday.

Ryan, meanwhile, will debut some time in early 2015.

NCIS Cast: Before They Were Stars

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Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.