Agatha Christie publishes Sparkling Cyanide

One year ago on November 2, seven people sat down to dinner at the Luxembourg.

One of them, Rosemary Barton, never got up. She was thought to have committed suicide due to post-flu depression. Her husband, George Barton, received anonymous letters saying that Rosemary did not kill herself but was murdered. George started to investigate and decided to reconstruct the dinner at the same restaurant, inviting the same people, except that he had asked an actress who looked like his late wife to come too - but that actress never did, and instead George died, in the same way Rosemary did - cyanide in his glass. His death could have been at a nearby table with a blonde. At one stage, he disguised himself as a waiter to introduce the cyanide to Iris' glass. Not giving up, Victor Drake and Ruth even tried to run Iris down with a car but Iris did not realise her life was in danger as everyone still thought that George was the intended murder victim, apparently murdered by Rosemary murderer to stop him from unveiling the truth. Eventually, Colonel Race together with Kemp (police) and Anthony Browne, suitor of Iris, unravelled the truth and saved Iris from being gassed to death - Ruth had hit Iris on the head and arranged her in Iris' room to make Iris appear as if she committed suicide by gassing herself in her room. The anonymous letters to George were sent by Ruth, to induce him to re-stage the dinner at Luxembourg so that Victor and Ruth could re-stage death by suicide of Iris.