A quiet, middle-aged man spirals into obsession and paranoia when a charismatic look-alike moves in next door, featuring the exact same face—and a full head of hair.
| Actor | Role |
|---|---|
 Laurent LafitteAlex Floutard / Axel Chambon | Alex Floutard / Axel Chambon |
 Olga KurylenkoTatiana Chambon | Tatiana Chambon |
 Blanche GardinNathalie Floutard | Nathalie Floutard |
 Marc FraizeDenis Moulard | Denis Moulard |
 Zabou BreitmanNicole Lecovec | Nicole Lecovec |
 Bertrand GoncalvesStanislas Berteau | Stanislas Berteau |
 Giovanni PucciEnzo | Enzo |
| LLéo GarciaElliot | Elliot |
 Olivier BrabantLe commissaire | Le commissaire |
 Olivier BayartLe jeune policier | Le jeune policier |
| EEmmanuel PlovierAlain | Alain |
| HHervé HaguePatrick Paperboard | Patrick Paperboard |
| AAhmed HamadiUn voisin | Un voisin |