Jeri Ryan has been cast as NCIS agent Jethro Gibbs’ fourth ex-wife, Rebecca, who will feature in a story arc on the top-rated series airing in January.

NCIS has alluded to Gibbs’ latest ex-wife from time to time, but unlike the first three, the fourth has never before been shown.

Ryan, of course, is best known to fans for playing the “deassimilated” Borg Seven of Nine on Star Trek: Voyager.