Purnell as Rhiannon Lewis in season two of 'Sweetpea.' Courtesy Sky/STARZ Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment Logo text Ella Purnell is back as wallflower-turned-killer Rhiannon Lewis in a first look at Sweetpea season two.