This is a BBC Radio 4 full-cast dramatisation of a classic Agatha Christie mystery. "There"s Rosemary, that"s for remembrance". Published in 1945, "Sparkling Cyanide" is all about remembrance. It begins with six characters recalling the horrific death of Rosemary Barton, a beautiful but shallow young heiress poisoned by a cyanide-spiked glass of champagne whilst celebrating her birthday at a smart London restaurant. Rosemary haunts all six characters, each of them a suspect, throughout the story - and it"s not until her killer is found and her ghost laid to rest that the group can move on, though they will never forget. With a distinguished cast including Peter Wight and Amanda Drew, this wonderfully entertaining production retains the thrill of Agatha Christie"s clever, compulsive story.