Seidr is the intriguing and powerful early Norse system of shamanistic trance practices. In Seidr: The Gate is Open, Katie Gerrard has contributed a major work on the practices of seidr and trance prophecy, providing a practical manual full of dynamic group rituals and techniques based on known Seidr practices. Foremost amongst these techniques is the prophetic rite of the High Seat, where the Volva (seer) sends her consciousness to the underworld realm of Hel to gain answers to the questions posed to her.

Combining more than a decade of research and experimentation, this book is characterised by both its scholarship and its accessibility. Katie Gerrard shares her own experiences on the path of the seer, and also draws inspiration from original sources in the old texts of the Sagas and the Eddas, as well as contemporary researchers and groups working with seidr in Scandinavia, Europe and America. Techniques for achieving trance, levels of trance possession, coming out of trance, the vardlokkurs (chants), necessary equipment, and the requirements for the roles of the different participants are all discussed clearly and concisely, as is the relevance of contacting the ancestors, the dead, and appropriate gods, including the goddesses Freyja and Hel and the Allfather god Odin.

As befits such an inspirational book, the author provides both the relevant background information for the eleven rites contained within, together with explanations of their inclusion and purposes. The rites emanate practical effectiveness, a result of their regular use over many years for successful exploration of the mysteries of trance prophecy, the High Seat rite and Norse witchcraft. "This is a spiritual journey laid bare for an audience who are either already treading a similar path or are looking for guidance in order to follow a well trodden path to a similar end point."