Yvette Fielding and Derek Acorah visit the West Wycombe Caves, the site of the notorious Hell-Fire club's satanic rituals, hoping something will go bump during their nighttime vigil. The elaborate network of manmade caves were excavated in the late 1740s and 1750s to give unemployed farmers work quarrying chalk to build a new main road into nearby High Wycombe. The caves, which extend 500 metres underground, it's said that the caves were used by Sir Francis Dashwood to hold secret meetings of the famous Hell-Fire Club. The notorious gentlemen's club was through to be involved in sexual rites, orgies, abuse of alcohol and Satanism.