The classic murder mystery follows a recently divorced couple called Nevile and Audrey (played by Oliver Jackson-Cohen and Ella Lily Hyland), who spend their summer on the estate belonging to his aunt Lady Tressilian (Anjelica Huston).
Speaking to The Mirror and other media at a press event for the new series, Mimi reflected on spending time with Anjelica on-set, with the pair sharing several "wonderful" moments together.
Mimi, who played Cindy Williams in EastEnders, went on to reveal that the cast shared many lunches with Anjelica on the Devonshire coast, where she told them "lots of stories" from her glittering career.
"Add to this a long-suffering lady's companion, a mysterious gentleman's valet, an exiled cousin with a grudge, a venerable family lawyer, an inquisitive orphan, and a French con man, and soon there will be a murder," the official logline teases.
I'm working, I'm getting to do this scene with her, and I'm so excited and nervous, but I'm watching her and thinking, 'Oh god, you're so good,' but at the same time, as soon as we started, she made me feel so relaxed, and I was able to do my job.
