This is a fun piece of Big Love casting news: Former Melrose Place star Grant Show has landed a key, recurring role on the final season of this HBO hit.

Most recently seen as Addison's brother on Private Practice, the actor will debut on the January 16 season premiere and portray a spiritual marketing guru who interacts with Margene.

“That’s a major part of [Margene's] story, that whole multilevel marketing that he’s involved in becomes part of her story,” creator Will Scheffer told EW. “So we see him big time in the middle and late season.”

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