Montpelier Hill looms large in the supernatural tales of Dublin and even larger in Dubh Linn. Standing on top of it is the Hellfire Club, once a hunting lodge built in 1725. Stones from the cairn beside it were used in the construction and that sort of thing never ends well. It was used by members of the Irish Hellfire Club for meetings and the stories of wild behaviour, gambling, drunkenness and deals with the devil soon followed. They abandoned it after a fire which was reputedly started by one of the members when a footman spilled his brandy. His solution? Setting the man on fire.

Strange occurances, ghostly reports and bad luck continue to be associated with the Hellfire Club.