Grant Show signs up for 'Big Love' role
Entertainment Weekly reports that the actor will make his first appearance in the show's upcoming fifth season premiere.
He is expected to play a "spiritual marketing guru" who turns up when Margene (Ginnifer Goodwin) is struggling with her jewellery business.
The show's creator Will Scheffer explained: "That's a major part of [Margene's] story - that whole multilevel marketing that he's involved in becomes part of her story. So we see him big time in the middle and late season."
Co-creator Mark V Olson added: "They've got great chemistry and oddly enough he and Bill have great scenes together when they go toe-to-toe."
Big Love returns for a new season on January 16 on HBO.