Spiritual traditions have always taught that true freedom arises from remaining true to who we are at our core. Through the mythological figure of Orcus, the guardian of the oath, this book explores the inner oath: that silent promise never to deny one's essential truth. Based on the principles of mindfulness astrology, it offers a comprehensive interpretation of Orcus in terms of signs, houses and aspects, revealing the areas where our integrity is put to the test and where every choice that remains true to our inner compass strengthens both our own coherence and that of the world.