Inviting the ex-wife to a family reunion when the none-too-secure new wife will be there hardly seems to be a recipe for success, and true to form, bodies have begun to stack up by the end of this cinematic update of a classic Agatha Christie tale. Luckily for the extended clan gathered at a sumptuous waterfront estate in Northern France, Inspector Martin Bataille is on hand to find out not only "who done it" but why.
| Actor | Role |
|---|---|
 François MorelLe commissaire Martin Bataille | Le commissaire Martin Bataille |
 Danielle DarrieuxCamilla Tressilian | Camilla Tressilian |
 Melvil PoupaudGuillaume Neuville | Guillaume Neuville |
 Laura SmetCaroline Neuville | Caroline Neuville |
 Chiara MastroianniAude Neuville | Aude Neuville |
 Alessandra MartinesMarie-Adeline | Marie-Adeline |
 Jacques SereysMe Charles Trevoz | Me Charles Trevoz |
| HHéloïse WagnerNot listed | Not listed |
 Clément ThomasNot listed | Not listed |
 Hervé PierreNot listed | Not listed |
 Paul MintheNot listed | Not listed |
 Xavier ThiamNot listed | Not listed |
| VVania PlemiannikovNot listed | Not listed |
 Valériane de VilleneuveNot listed | Not listed |
| CCarmen DurandNot listed | Not listed |
 Dominique ReymondNot listed | Not listed |
| MMarion BartherotteNot listed | Not listed |