Download or read book The Poison Principle written by Gail Bell and published by Pan. This book was released on 2002 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Dr William Macbeth poisoned two of his sons in 1927, his wife and sister hid the murders in the intensely private realm of family secrets. Like the famous poisoner Dr Crippen, Macbeth behaved as if he were immune to consequences; unlike Crippen, he avoided detection and punishment. Or did he? Secrets can be as corrosive as poison and, as time passed, the story of Dr William Macbeth, well-dressed poisoner, haunted and divided his descendants.