Rachel Brosnahan has ‘no idea’ what’s instore for season 4 of ‘Marvelous Mrs. Maisel’ Duration: 01:51 Actor Rachel Brosnahan hasn’t seen her “Marvelous Mrs. Maisel” castmates in nearly a year and says she can’t wait until they’re all together soon. Looking ahead to filming season four of the Amazon Prime series, she tells Sunday TODAY’s Willie Geist has “no idea” what’s in store for her character beyond the extravagant costumes.