>> that suicide attempt got him the attention of one young woman, a 26-year-old named gloria, a volunteer at the hospital where he sought treatment. they started dating and married in 1979. but for chapman, the marriage offered no honeymoon from his demons. just months later, his frenzied descent down the path to murder began. >> you don't usually get this kind of primary document. and the fact that he had it was extraordinary to me. >> chapman kept a detailed calendar of the manic months leading to lennon's death. >> you can almost see the progression of his illness in the increasing chaos of this calendar. >> many days were spent at the library obsessed with the cult classic "catcher in the rye" and its main character holden caufield. >> i really identified with him.