Ben Feldman has joined the cast of Mad Men.

The actor, who is best known for his role as Fred on Drop Dead Diva, and has been signed up to play a new employee at the ad agency Sterling Cooper Draper Pryce, Deadline reports.

Further details of his character are unknown but he will make his debut on Sunday night's episode on AMC in the US and Sky Atlantic in Ireland.

Feldman's first Mad Men appearance, Tea Leaves, will also feature the return of January Jones and is directed by the show's lead actor, Jon Hamm.