The 'Caddies', that strange band of beggars and guides that formed a distinctive feature of sixteenth-century Edinburgh, provide an exciting human flavouring to the vividly realized, physical setting of Mollie Hunter's story of murder, intrigue, treachery and political conspiracy [The Spanish Letters]….

Mollie Hunter has portrayed an entirely credible society in which not all enemies are without honour. This story … will be seldom found on the library shelf.