In the seventies, when he was just 20 years old, David Cassidy achieved the sort of teen idol fame that is rarely seen. He was mobbed everywhere he went. His clothes were regularly ripped off by adoring fans. He sold records the world over. He was bigger than Elvis. And all thanks to a hit TV show called The Partridge Family . Now, in his own words, this is a brutally frank account of those mindblowing days of stardom in which being David Cassidy...