Cheeky, funny and never fawning, Heat was a new source of celeb info when it started in 2000. And Marks' been there since the beginning, from his first interview with Posh to the rise and fall of Jade and Big Brother, through to Britney's tragic descent from sexpot to being sectioned.From Kate Moss and Paris Hilton to Amy Winehouse and Cheryl Cole - in green rooms and VIP lounges, celebrities have confided in Mark and have been highly indiscreet in his presence.Now, for this first time, Mark is opening up his diaries. And no one is safe.