Paul d’Orino was the only son and heir of a wealthy baron.  He was also a sadistic homicidal psychopath.  Naturally, no one was aware of that side of his nature.  At least, not until Paul overheard his father complaining about the expense of reliable assassins.  Baron d’Orino, it seemed, wanted a rival of his out of the way, but was loath to pay the high fees demanded by the assassin’s guild.  Paul offered to eliminate his father’s rival “for the thrill of it.”  His father scoffed, thinking it a joke.  Until, that is, his rival was brutally murdered in his bed by an unknown assailant.  The Baron was horrified by his son’s actions, but did not take any action.  And, inevitably, another rival came along, and the Baron lamented the expense.  So he casually mentioned the problem to his son, and was rewarded with the inexplicable death by violence of his new rival.

Even knowing as much as he did about Paul’s activities, the Baron was not on his guard.  So it came to be that Paul sent his father to his ancestors in the dead of night.

The new Baron d’Orino had no interest in politics, so he was not particularly interested in removing rivals.  At least, not more so than he was removing any other random person.  But Paul was an intelligent young man, and realized that many other noblemen might have his father’s same complaint about the cost of assassins.  So he mentioned to a few friends of his that he had found an excellent assassin who charged very little.  Unfortunately, the assassin did not permit his name to be given out to anyone, but Paul could pass along job requests to him…

The response was immediate.  Several people contacted Paul as an intermediary for his “assassin” and Paul had his pick of killings to be done.

Over time, Paul found a few like-minded people among the aristocracy.  Wealthy young men and women with nothing to do, and an insatiable bloodlust.  And so the Thrillkill Society was born.  There aren’t many members, and they use codenames to avoid legal repercussions, not that they couldn’t buy their way out of trouble.  Each member has their preferred targets- “Widowmaker” (the fourth son of a duke) very much enjoys killing young married men, and will not accept a target at all unless he has at least two children.  “Innocence Lost” (a young count, brother to a priest) prefers to strangle children and pretty young women.  “Rose” (in fact a princess by marriage) seduces and then cuts the throats of what she refers to as “dirty old men.”  And so on and so forth.

Each member of the Thrillkill Society is a dangerous killer, in it for the thrills and the pure love of killing (not one of them is less than a titled lord, and they need no money).  Their work as assassins for hire is merely to give them an excuse to do what they would anyway.  Fees charged are always very low, and depend on how much fun they had completeing any given assignment.  They are not overly concerned about getting caught; money can work miracles.

Finding the Society is hard, hiring them is easy, provided that one has no qualms about how long it takes the target to die or how much they suffer before hand.

Of course, if one does business with them (or even considers doing business with them), one needs to be cautious.  Because you never know when the Thrillkill Society may turn on and kill you… just for the thrills.