Jeff Fahey is heading to “Justified.”

The “Lost” and “Under the Dome” alum has signed on for a multi-episode arc on the FX drama, which stars Timothy Olyphant and Walton Goggins.

See video: ‘Justified’ Casts ‘Lost’ Alum Jeff Fahey ‘Justified’ Final Season Teaser Promises Epic Showdown Between Timothy Olyphant, Walton Goggins

Fahey will play Zachariah Randolph on the series, which enters its sixth and final season in January.

In his 60s, Randolph is described as weathered and a little shaky, a man beaten down by hardship and drink. An Old Coot from the hill country, Zachariah can still find his way around an abandoned mine shaft.

Also read: Sam Elliott, Garret Dillahunt Join FX’s ‘Justified’

The series has also cast Sam Elliott and Garret Dillahunt for its final season.