According to the version of events passed down by the Sisters of Loretto, multiple builders were consulted but were not able to find a workable solution due to the confined quarters. In response, the nuns prayed for nine straight days to St. Joseph, the patron saint of carpenters. On the last day of the novena, a mysterious stranger appeared and offered to build the staircase. He worked alone using only a few simple hand tools and disappeared afterwards without collecting his pay or the Sisters learning his identity. More fantastical versions of the story have the work taking place overnight, while according to others it took six to eight months.