By Jonathan Tucker has joined the final season of Justified.
The Kingdom actor will play Boon, a mercenary hired by Avery Markham (Sam Elliott). Avery is the ex of Mary Steenburgen's character Katherine Hale.
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Described by creator Graham Yost as a "wonderful character [and] a gunslinger", Boon will be seen in the last five episodes of the series, reports The Hollywood Reporter.
Jeff Fahey (Lost) and Garret Dillahunt (Raising Hope) were previously confirmed for season six.
Tucker's other roles have included Parenthood and Hannibal.
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Justified returns on Tuesday, January 20 on FX in the US.
After picking up the British rights earlier this year, Sky On Demand will screen the show's last run in the UK.
