The beautiful but unfaithful wife of a successful lawyer meets her untimely end at their anniversary dinner. After a suicide note is found soon after her death, it seems more likely that she was murdered, as all the dinner guests had good reason to want her dead.

Anthony Andrewsas Tony Browne
Deborah Raffinas Iris Murdoch
Pamela Bellwoodas Ruth Lessing
Nancy Marchandas Lucilla Drake
Josef Sommeras George Barton
David Huffmanas Stephan Farraday
Christine Belfordas Rosemary Barton
June Chadwickas Sandra Farraday
Barrie Inghamas Eric Kidderminster
Harry Morganas Captain Kemp