In this book Tenga Rinpoche, one of the great teachers and meditation masters of our time, introduces the six kinds of bardo, and gives instructions on how consciousness can be guided through each of these phases and liberated.
This teaching can be traced back to the Indian yogi Padmasambhava, Guru Rinpoche, who brought Buddhism to Tibet. It is taken from Karma Lingpa's work, "The Peaceful and Wrathful Deities".

Transition and Liberation, Tenga Rinpoche, Khampa Edition, Hardcover, 115 pp., $16.95

Some years later, Situ Pema Wongchuk visited Benchen and Sangye Nyenpa asked him how he might find the incarnation of his lama, Tenzin Chogyal. Situ Rinpoche predicted the name of the father and mother of the child, the year of his birth (1932), and said that Sangye Nyenpa would not have to look far, but would find the child within the vicinity of Benchen. After a search, they found the child (the present Tenga Rinpoche), who was seven years old. He then began his studies at Benchen and received refuge and the name Karma Tenzin Thinle Namgyal from Situ Rinpoche. At sixteen, he was instated as a Tulku and in the next years took the opportunity to learn medicine from an uncle, who was both a lama and a doctor. At nineteen, he received ordination from Situ Rinpoche and when his studies were completed, he entered a three-year retreat. During this time, he became particularly adept at White Tara meditation (his yidam) and tummo. It is said that in the retreat, his water bowls were the only ones which did not freeze over in the winter. When the Chinese invaded in 1959, Tenga Rinpoche left Benchen for Lhasa and then northern India. Following his arrival in India, he went to Rumtek, the seat of His Holiness the Gyalwa Karmapa, where Rinpoche served as dorje loppon (vajra master) for more than nine years. In 1974, he traveled with the Karmapa to the West. Since then, he has traveled extensively in the West, giving teachings on Buddhism. Every two years, he teaches a three-week seminar in Germany, where many of his students reside. In 1986, Tenga Rinpoche established the new Benchen Monastery in Kathmandu, at the foothills of Swayambhu. At present, this monastery is the center for traditional ritual practice of the Karma Kamtsang lineage. The monks, under the guidance of both Tenga Rinpoche and Sangye Nyenpa Rinpoche, are trained in meditation and Dharma studies in general, and particularly the traditional tantric rituals such as sand mandalas and lama dances. Twice a year, they perform the Mahakala and Padmasambhava lama dances. Fulfilling the wishes of Tenga Rinpoche and Sangye Nyenpa Rinpoche, a health clinic was started in 1994. This clinic provides free medical care not only for the monastery, but also for local people who cannot afford such care. A retreat center has recently been built in the area of Parping, twenty kilometers from Kathmandu, as part of Benchen Monastery. This will provide the traditional three-year retreat for the monks, as well as accommodations for shorter and longer retreats for lay people.