Aquamarine (2021)

Babies and husbands keep disappearing and dying in 18th century England, but when Frederick Nattrass arrives for an afternoon tea with Mary Ann Cotton they don't care about that at all. All Frederick knows is that they are mightily in love with this handsome and unusual creature who offers a bit of tea and another chance at love. Is marriage in the cards for these two lovebirds or does Mary Ann have something else in mind?