An ex is about to mark the spot on Justified Season 5.

Mary Steenburgen (30 Rock, Wilfred) has been cast in a recurring role on the FX series, according to network sources.

She will premiere on Episode 10 and stick around for a few weeks as the former wife of Wynn Duffy’s crime mentor. No word on on exactly how she'll come into play.

Aside from the aforementioned hit programs, the veteran actress has guest-starred on Bored to Death, Curb Your Enthusiasm and Joan of Arcadia.

This FX series, meanwhile, is off to its usual strong start. Watch Justified online in order to catch up.

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