Alfred Gragnon

Grey contre X

Grey conducts a triple murder investigation, the last murder committed gives him some clues to the murderer and that the victim may have known his killer. He devises a plan to identify the guilty party, who is a scary psycho and he is captured.

La treizième enquête de Grey

Grey, an elite detective, has the mission to investigate the assassination, in Paris, of a great Hollywood star. There is no real motive, and yet the suspects are numerous. The investigation promises to be long and difficult.

Le Secret de l'émeraude

In a small hotel on an English beach, an agent from the Intelligence Service is responsible for finding an important stolen document. At night, a theft of jewelry, including a superb emerald, complicates the investigation. The search for the double culprit proves to be difficult.

La Mystérieuse Lady

In India, a British detachment finds itself surrounded in a village by invisible enemies. An officer is assassinated, then another. The adversary seems very well informed. By who ? A group of twenty men who had gone to seek help were annihilated. An American reporter will force the mysterious spy to denounce himself.