Showtime has cast film and television star Joshua Jackson (FRINGE, DAWSON'S CREEK) in its drama pilot THE AFFAIR. Jackson joins previously announced cast members Dominic West (THE WIRE), Ruth Wilson (The Lone Ranger) and Maura Tierney (THE GOOD WIFE, ER).Jackson will play the role of Cole, a hard-edged cowboy who manages a ranch on the eastern tip of Long Island that has been in his family for generations. Cole is married to Allison (Golden Globe nominee Ruth Wilson) a young woman, working in a pancake house, trying to piece her life back together in the wake of a tragedy. Their emotionally charged marriage becomes even more complicated when Allison begins an affair with Noah (Golden Globe nominee Dominic West), a New Yorker who is spending the summer with his family out on the island.