Debbie Horsfield Only Had One Man In Mind To Play Her 'Poldark'
*Warning: This episode contains spoilers for Episode One of Season Four of *Poldark.
\n\nDebbie Horsfield is the only writer of every episode of MASTERPIECE\u2019s Poldark, so she definitely knows what\u2019s on the horizon in the series\u2019 fourth season. Secrets, lies and parliamentary politics come to Cornwall in a big way this season. Horsfield \u2014 who is also one of the series' executive producers \u2014 offers a sneak preview of the surprises still to come, and reveals why Aidan Turner was always the only actor she would cast as Ross.