The book is about British serial killers from the 19th century all the way to the present day. I have written the book to show the readers what a serial killer is and why he is so different from any other killers. In Britain it is estimated that there are between 70 and 80 known serial killers and the book will cover about 75% of them. Fortunately for us most serial killers are arrested and sentenced to very long prison sentences and of course the earlier serial killers were executed. But is also shows some serial killers who have remained unidentified and have never been arrested.