The Titan Club
The Titan Club was a fictional secretive  of influential and rich businessmen, politicians, and captains of industry within the Dixon Hill series. 

Within the book series, the twelve members of this club had made many enemies, including the mob boss Deacon , the Robin Hood crime duo Cassiopeia and Jimmy Cole, and the eccentric daughter of the Goines family. These characters became suspects in the murders of the club's members. The solving of these murders was covered in the novel The Pallid Son, where private investigator Dixon Hill was hired by the club to find the killers. He was soon joined with an enigmatic figure, The Pallid Son, and together they worked to solve the case. ()

The Dixon Hill Series