Mrs Opalsen

In the short story The Jewel Robbery at the Grand Metropolitan, Mrs Opalsen was the wife of rich stockbroker Ed Opalsen. While staying at the Grand Metropolitan in Brighton, an expensive pearl necklace which her husband had bought for her was stolen.

Portrayals
Mrs Opalsen was played by Sorcha Cusack in the film adaptation of The Jewel Robbery at the Grand Metropolitan in Series 5 of ITV's Agatha Christie's Poirot drama series. There her husband was not a stockbroker but an impresario. He was putting up a play entitled "Pearls Before Swine". Mrs Opalsen was an actress and had a lead role in the play, acting as "Lady Jane". Her husband had spent a vast sum to buy the pearls for her to wear on stage, knowing that it would draw an audience. In the adaptation, Mrs Opalsen had the first name "Margaret". This was not given in the original story.

In the NHK's anime adaptation The Jewel Robbery at the Grand Metropolitan, the character of Mrs Opalsen is voiced by Mitsukô Kusabue. The portrayal is very faithful to the original. She is even wearing an emerald when she first meets Poirot. In the original story, she said she had chosen to wear an emerald instead of her pearls.