I need help finding the title of a book. (That's how I found this forum.) I read it many years ago...probably in the 80's, but it could have been published before then. It just keeps popping up in my mind! It was about a man whose daughter had joined a cult. The leader of the cult is capable of astral projection (out of body travel). In order to fight the leader, the father sees some type of "guru"(?) who gives him a "crash course" in astral projection. Learning to do it so quickly would supposedly lead to mastering it, or insanity. Part of the training involved staring at a wall for hours(?) days(?). Eventually, the father learned astral projection, fought the cult leader while out of body, and defeated him by cutting a cord that lead back to his physical body. I think the cover MAY have had a picture of a teddy bear with a knife in it? ...and maybe a rat? Now that I think of it...the cult leader may have taken over the body of a rat at some point.... Does this sound familiar to anyone? Thanks for any help!