Nadine Mercuret

In the L'Homme au complet marron episode of TV series Les Petits Meurtres d'Agatha Christie, Nadine Mercuret is a French secret service agent. She was inserted undercover as a secretary in the the Lille Opera (Opera Moderne de Lille) in order to watch a Russian dancer Tatiana Pochenko. Tatiana was believed to be close to a Russian masterspy "The Colonel". Nadine's ultimate mission was to discover the identity of "The Colonel". Nadine was a close friend of commissaire Laurence and they had once be colleagues of the same network in the French resistance. Gilbert Loyson, Nadine's superior believed she was in love with Laurence.

Early in the episode, we see Nadine making a phone call with a coded message telling someone that she thinks she knows who "The Colonel" is. However the phone line is cut. She leaves the Lille Opera and a car drives by. Someone in the car shoots her. Although seriously wounded, Nadine manages to make it to Laurence's apartment where she dies in his arms. The only thing she manages to say to Laurence before dying is "Gilbert".

Despite the similarity in the name, Nadine is not really a parallel of Nadina from the original novel.

The part of Nadine is played by Gaëlle Fraysse.