'My father is the Zodiac killer' claims author in new book

The author of a new book claims he is the son of the notorious Zodiac killer, an unidentified serial killer who terrorised Northern California in the late 1960s.

Gary L. Stewart, who penned The Most Dangerous Animal of All with journalist Susan Mustafa, discovered items of evidence 'that conclusively identify his father, Earl Van Best, as the Zodiac killer' after he embarked on a journey to find his biological father, publishers Harper Collins said in a description of the book.