the author was 20-year-old dustin wehde. . >> it's dustin's, yeah. yeah. he's got very distinct writing. >> the heart of the pink journal -- its core story -- outlined a strange plot. a "mysterious fellow", dustin wrote, had contacted him to carry out a shocking mission -- kill tracey roberts. and the identity of this mysterious fellow commissioning the crime? it was none other than tracey's first husband, dr. john pitman. surely this was the smoking gun that confirmed exactly what tracey had suggested to investigators so long ago. that her first husband, angry about their bitter custody battle, had been behind the attack. but even though dustin had physically written the journal, investigators didn't believe that he had authored it. >> it contained personal information about tracey's ex that he would never have known about. that he had once wanted to be a psychiatrist, not a plastic surgeon. and another remark -- that he liked to play mind games. why would this 20-year-old kid in early, iowa, know any of these details about