""Prince of Mercy or Scottish Trinitarian Degree"" is a book written by Albert Pike. The book is a comprehensive guide to the Scottish Trinitarian Degree, an important degree in Freemasonry. It explores the history, symbolism, and rituals of the degree, providing a detailed understanding of its significance to Freemasons. The book also delves into the life of the Prince of Mercy, a central figure in the degree's mythology. Overall, ""Prince of Mercy...