The Hellfire Club was a name for several exclusive clubs for high society rakes established in Britain and Ireland in the 18th century, and was more formally or cautiously known as the Order of the Friars of St. Francis of Wycombe. These clubs were rumoured to be the meeting places of "persons of quality" who wished to take part in immoral acts, and the members were often very involved in politics. Neither the activities nor membership of the club are easy to ascertain. The club motto was Fais ce que tu voudras (Do what thou wilt), a philosophy of life associated with François Rabelais' fictional abbey at Thélème and later used by Aleister Crowley.

Throughout history, secret societies have captured the public's attention. They have been the basis for many conspiracy theories mainly based on their tight secrecy. The question still remains today if they really were secret societies set to overtake the world or if they were just bored people who wanted to give the world something to talk about. One of those secret societies was the Hell Fire Club in England.

http://theunexplainedmysteries.com/HellFire-Club.html