Upon arriving in England , Milady is arrested and imprisoned in a house by de Winter , who has chosen for her jailer a man he thinks will be impervious to her charms , straitlaced Puritan John Felton .
Upon arriving in England , Milady is arrested and imprisoned in a house by de Winter , who has long suspected that she poisoned his younger brother . 
 He chooses for her jailer a man he thinks will be impervious to her charms , straitlaced Puritan John Felton .