This first episode is interesting enough with the beginning of Charles & Diana's romance which seems so tragic in hindsight. The assassination of Mountbatten isn't shown in too graphic detail. The bad casting that spoiled the 3rd season has multiplied in Season 4 with the terrible choice of actress as Diana. Emma Corrin is a bad choice for Diana. She doesn't have Diana's look, and lacks Diana's sweetness. Olivia doesn't look like the Queen and she has an undignified persona that just is so jarring. There are some good points that will still make me watch this season. Gillian Anderson is a superb actress - she is in top form here as Thatcher - better than Meryl. The production is lovely as always with beautiful countryside scenery helps.