Inspired by a European man’s skeleton found in the rural locality of Barguzin, Siberia, designer Márton Borzák has created a book which contains its own hidden secrets.

P.S. Secrets of the Barguzin Skeleton centres around the mysterious find and the controversy which surrounded it, given the skeleton’s similarities to that of the poet Sándor Petőfi.

However, the most interesting aspect of the book’s design comes courtesy of its UV visible content. Taking the element of secrecy a step further, additional text and images in Borzák’s book are only visible to readers under ultra violet light, allowing those readers access to commentary by the author, explanations of images and further information aimed at shedding light on the mystery.

The publication is the latest in a growing number of contemporary printed media exercising novel ways to enhance the print experience for readers. Just like Khaled Hosseini’s new book, And The Mountains Echoed, which saw Penguin Books partner with artists and authors to create The Echo Project, an interactive online accompaniment to the novel, Borzák’s book provides an extra level of reflection on a story with many more discoveries to be made.