A page from the past

The first warning is swift and to the point, but bookstore owners Glenn and Lindsay Reade don't 'get it' until their lives are threatened a second time. All they've done is read a young girl's diary and attempt to locate the owner. Just because the journal describes the girl's rape and subsequent murder of the rapist is no reason for anyone to want them dead, is it? The book is obviously more than 40 years old. Who in the tiny Berkshire town of P...