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The Messengers - Navid Negahban and Lauren Bowles join cast

Homeland alum Navid Negahban and True Blood's Lauren Bowles have booked recurring roles on the midseason series from writer/co-EP Eoghan O'Donnell (Teen Wolf), The Hollywood Reporter has learned.

Bowles, who has played Holly on the HBO vampire drama for the past four years, will portray Sen. Cindy Richards, a hard-working, passionate politician driven by a painful personal past. When she crosses paths with the so-called Messengers, she's not only in the midst of a re­election campaign, but also on the verge of making choices that may have a long-lasting impact far beyond the Beltway.

Negahban, who played terrorist Abu Nazir on the Showtime drama, is set to play a Middle Eastern prime minister whose responsibility of keeping peace in his volatile country weighs heavily on him, and may force him to make some very unpopular decisions.