Fan Casting Starz The Other Boleyn Girl

The fourth in the White Queen series that previously aired. King Henry VIII lacks an heir. Seeing this as an opportunity for personal gain, the Duke of Norfolk and Sir Thomas Boleyn persuade Thomas' daughter Anne to seduce the king. But Henry falls in love with Anne's sister, Mary instead. When Mary becomes pregnant, she's confined to bed, with charged with Anne keeping the king from straying -- but the plan backfires when Anne seeks the king's affections for herself.