Former The Wire and The Hour star Dominic West is to star in new Showtime pilot.
The Affair is a drama from House of Cards' writer Sarah Treem that explores how two marriages are rocked by infidelity.
West will play Noah, a married high school teacher who is tempted to stray from family life when he falls for a beautiful woman.
The 43-year-old English actor is best known for his role as cop Jimmy McNulty in HBO's The Wire and recently starred in BBC period drama The Hour.
He will next be seen playing opposite Helena Bonham Carter in the Hollywood biopic Burton and Taylor.
