This book is the original book on the Bardo that came out in English. It was translated by Kazi Dawa-Samdup with Evans-Wents being the editor. This edition (Oxford 2000) has a forward by Donald Lopez that updates the book

This book is about the Life and Legacey of Dudjom Rinpoche who was head of the Nyingma lineage in Tibet and taught thousands of lamas and westerners.  At his death he practiced Tukden and after his death his body shrunk to about a foot in length.

There is a fascinating phenomena of delogs  who are people who have died and then returned to tell all about their experiences in the netherworld. Plato actually mentions one in Greece and this book has very detailed accounts of Tibetan Buddhist who died and then days or weeks later suddenly came back alive.

Books on the Bardo usually begin by explaining that the Bardo Thodol (Tibetan Book of the Dead) was written by Padmasambhava in the 8th century CE.  Cuevas in this fascination book actually traces the teachings and Death and Dying from many centuries before Padmasamhava to the present including many misconceptions of present day books on the bardo.

This is an excellent book by Chokyi Nyima Rinpoche who used the same text  by Natsok Rangdrol The Mirror for Mindfulness as Thrangu Rinpoche did in his book on the bardo. These teachings on the Bardo are not available here as a free download.