Based on seven handwritten notebooks written by the Rev. Donald Gillies, The Truth About St Kilda is a unique record of the way of life on St Kilda—a remote chain of islands near Scotland that was home to an isolated community—in the early part of the 20th century. It contains reminiscences of his childhood on the island of Hirta, providing a firsthand account of the living conditions, social structure, and economy of the community in the early 1900s, before the evacuation of the remaining residents in 1930. The memoir describes in some detail the St Kildans’ way of life, including religious life and the islanders’ diet. The puritanical form of religion practiced on St Kilda has often been interpreted by outsiders as austere and draconian, but Gillies’s account of the religious practices makes clear the important role that these had in reinforcing the spiritual stamina of the community. This book is a lasting tribute to the adaptability and courage of a small Gaelic-speaking society which endured through two millennia on a remote cluster of islands, until its way of life could no longer be sustained.