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With a 1920s dinner party turning into a murder mystery, The Doctor and Donna meet Agatha Christie on the eve of her publicized disappearance.
Length 45 minutes
Fenella Woolgar | David Tennant | Tom Goodman-Hill | Catherine Tate | Felicity Jones | Christopher Benjamin | Adam Rayner | Ian Barritt | Felicity Kendal | David Quilter | Leena Dhingra | Charlotte Eaton | Daniel King