The Hellfire Club tells the story of Charlie Marder, a young Freshman Congressman who arrives in 1950s Washington D.C. after the mysterious death of his predecessor. Finding himself thrust into the dangerous waters of politics at the height of Joe McCarthy's "Red Scare", he and his zoologist wife Margaret must quickly learn who is friend and who is foe. Amid the swirl of glamorous and powerful political leaders and deal makers, a mysterious fatal car accident thrusts Charlie and Margaret into an underworld of backroom deals, secret societies, and a plot that could change the course of history. When Charlie discovers a conspiracy that reaches the highest levels of governance, he has to fight not only for his principles and his newfound political career, but for his life.