If something supernatural and evil had descended on Boleskine House and Loch Ness, then it didn’t take long before it began affecting and infecting the people that lived around the loch. On one occasion, shortly after moving into Boleskine House, Crowley returned to the abode after a stroll in the hills, only to find a priest sitting in his, Crowley’s, study. As pale as a ghost and deeply worried, the priest confided in Crowley that the keeper of the lodge-house, a man named Hugh Gillies, and who was described as being a lifelong teetotaler, had been drunk for days and even tried to murder his own family. Things got even worse…

Source: More on Aleister Crowley and Boleskine House | Mysterious Universe