Mediumship : Your guide to communicating and healing through the spirit world by Kerrie ErwinMediumship, which has existed since the beginning of time, offers a powerful healing tool in people's lives during the grieving process. Many people feel a calling towards mediumship and want to know more about how to expand their energy and raise their consciousness so they are able to connect with the dimension known as the spirit world. Kerrie Erwin has lived between two worlds since childhood and is able to both see and hear spirit people talking.