Sparkling cyanide

"Six people sit down to a sumptuous meal at a table laid for seven. In front of the empty place is a sprig of rosemary-"rosemary for remembrance." A strange sentiment considering no one is likely to forget the night, exactly a year ago, that Rosemary Barton died at exactly the same table, her beautiful face unrecognizable, convulsed with pain and horror. But then Rosemary had always been memorable-she had the ability to arouse strong passions in most people she met. In one case, strong enough to kill..."--P. [4] of cover.

Six people remember Rosemary a year after her death, but one of them killed her.