| Agatha Christie |
– Author |
| Neville Teller |
– Dramatised by (for radio) |
| Elisabeth Thams |
– Translation |
| Karin Hox |
– Direction |
| Inger Marie Andersen |
– Actor (Rachel Argyle) |
| Morten Andresen |
– Actor (Jack Argyle (Jacko), Argyles adoptivsønn) |
| Eilif Armand |
– Actor (Dommeren / Dr. MacMaster) |
| Eva Bergh |
– Actor (Gwenda Vaughan, privatsekretær) |
| Ulf Borge |
– Actor (Philip Durrant, Marys ektemann) |
| Kim Haugen |
– Actor (Michael Argyle (Micky), Argyles adoptivsønn) |
| Gøril Haukebø |
– Actor (Mary Durrant, Argyles adoptivdatter) |
| Thor Hjorth-Jenssen |
– Actor (Leo Argyle) |
| Sjur Midttun |
– Actor (Cyril) |
| Grete Nordrå |
– Actor (Kjersti Lindstrøm, husholderske) |
| Ola Otnes |
– Actor (Dr. Donald Craig) |
| Stine Ramdahl |
– Actor (Tina Argyle Argyles adoptivdatter) |
| Sverre Røssummoen |
– Actor (Politiinspektør Huish) |
| Eva Koefoed Sevaldson |
– Actor (Hester Argyle, Argyles adoptivdatter) |
| Rhine Skaanes |
– Actor (Maureen Green / Mor til unge Micky) |
| Bjørn Sothberg |
– Actor (Advokat Marshall) |
| Johan Sverre |
– Actor (Dr. Arthur Calgary) |
| Nils Vogt |
– Actor (Politimester Finney) |
| Bjørn-Tore André |
– Other (Annonsering) |
| Odd Gjøstein Dahle |
– Technical direction |
