Between September 1940 and August 1944, luxury hotels are requisitioned by the Germans as staff headquarters, giving the hotels' employees a ringside seat of the enemy's secrets and activities. Such is the case with Royal Palace, run by Maxime and Solange Verdier, in which the Abwerth, the German counter-intelligence service, establishes its HQ.
| Actor | Role |
|---|---|
 Michel LeebFrançois Verdier | François Verdier |
 Daniel RussoMaxime Verdier | Maxime Verdier |
 Claire MaurierHortense Verdier | Hortense Verdier |
 Alice IsaazMarion Verdier | Marion Verdier |
 Anne JacqueminSolange Verdier / Rose-Marie Verdier | Solange Verdier / Rose-Marie Verdier |
 Dominique PinonColonel Otto Strudel | Colonel Otto Strudel |
 Pierre KiwittLieutenant Johan Brandt | Lieutenant Johan Brandt |
 Antoine BaslerColonel SS Spieder | Colonel SS Spieder |
 Jean-Philippe LafontGénéral Sternitz | Général Sternitz |
 Michel CrémadèsAnatole Mandrin | Anatole Mandrin |
 Camille SolalOlga Jacobsen | Olga Jacobsen |
 Philippe AmbrosiniAdolf Hitler | Adolf Hitler |