The Westminster Four

The Westminster Four are a group of people who travel around the globe in search for targets to kill.

History
After Westminster Wakeman killed Bill Cooke, he crossed the channel and traveled to Paris. There he met Jean-Jacques LeTrou, a magician that specialised in escape tricks. They joined forces and traveled to the Netherlands together. There they met their new target, Herman van Torf. Wakeman wasn't able to kill him, because he "fell in love" with Herman's voice. Herman owed money to the maffia that hired Westminster and Jean-Jacques to kill him. To help Herman out, they instead killed the maffiaboss and robbed his vault.

Aurora Kuis doesn't really join the Westminster Four that many times in the early chapters. But she is part of it, according to the police.