The spirit of this book (as based on Aiden Breac's teachings) follow fairly closely to the tradition that I was raised in by my mother, who grew up in the far north of Scotland. The idea that the Scottish pagan tradition is a solitaire one is very true, and the methods put forward are workable in any solitaire trad.
I will grant, on the other hand, that Buckland went overboard as usual. That I know of, the only pre-roman alphabet ever found in use in Scotland was Ogham, so I have no idea where he came up with his others. Also, the idea of a set formula of spells was never taught to me, so I don't think that this was a part of the trad. But I expected these things from Buckland as his goal is to give the masses what they want.
My point is that there are some jewels of wisdom in ths book that are of great use to any student of pagan traditions, and especially to a student of Scottish traditions.
Unfortunately, his writings on astral projection and other occult topics is supported by a weak cast of predictable characters and a stereotypical plot. In fact, all the requirements of a predictable plot are fulfilled - the hints of romance, the conflicts within the groups, even the backstabbing villain.
The only reason to read The Committee is as a light preview to Buckland's other writing on the occult.
There is no new material here, the book's contents having been culled from his previous works, but it does provide the reader with an understanding of Holzer's scope and approach. The book is flawed in that it misses out on the opportunity to have Holzer speak on these particular cases after all this time (most of them are from books published in the 1960s)--do the ghosts of Whaley House still walk, for example? Revision and new commentary on works previously is the most important reason for the republication of works, after all. This collection comes across as if neither the editor nor the author knew the purpose of its publication: neither did the public, apparently, judging by the numbers of them one finds at used bookstores.
Still, Holzer is the Carl Sagan of his field, making his subject matter accessible to the educated layperson. Future generations will look back on his work as we do on the works of those earlier scientists who made observations on material they could not completely analyze, for lack of proper equipment or paradigms; his works will also provide a rich resource for those who wish to go ghost hunting themselves. This book, then, is recommended for those who are just beginning to study the paranormal: the cases he studies here are classics of the field, and his bright conversational style is sure to entertain even as it informs.