lennon mark chapman is being held by extraordinary precautions. >> i was asked if i could help the attorney on the chapman case. i agreed. >> forensic psychiatrist dr. daniel schwartz interviewed mark davidions for the defense. >> clearly, mr. chapman knew what he was doing, he used a gun in an all too accurate way. he knew it was a gun. he knew it could kill. and he pointed it at the intended victim, and unfortunately, it worked. >> the serious question in this case is whether or not his mental illness impaired his ability to appreciate that what he was doing was wrong. simply being somebody mentally ill does not acquit somebody, it's only if this mental illness impairs his ability to know and appreciate the nature and the consequence of his conduct, or that it's wrong. >> dr. schwartz believes that chapman's mental illness began in childhood. >> mr. chapman became seriously withdrawn at about the age of 9 or 10. it was about that age that he began imagining a whole world of people, little people. in the living room. in the walls of his living room, and he was their emperor, their commander. and it was my clinical assessment that he was both a paranoid schizophrenic as we understood the

chapman will spend the next two days waiting for john lennon. >> who was mark david chapman? ember 8, 1980, mark david chapman was a very confused person. he was literally living inside of a paperback novel, j.d. salinger's "the catcher in the rye." and he was vacillating between suicide and taking the first taxi back to hawaii back and forth between killing an icon. >> and then on the morning of december 8th, chapman calls his wife in hawaii. after hanging up, chapman takes out the bible from his suitcase and turns to the new testament book of john and writes the word "lennon" after the gospel according to john. and then at 8:00 a.m., he heads back to the dakota. >> i had a premonition that this is the last time i was going to leave my hotel room. i hadn't seen him up to that point, that's what makes it interesting, i wasn't sure he was in the building. and then i left the hotel room, bought a copy of "the catcher in the rye," signed it to holden caulfield from holden caulfield, and wrote underneath that, "this is my statement," underlining the word "this," the emphasis on th

. >> the suspect is identified as mark david chapman. >> hinckley idolized lennon.in his room at his parents' house. drinks peach brandy. plays his guitar and wallows in his own misery. ♪ sometime during the night, hinckley writes in his diary, john lennon is dead. forget it. it's just going to be insanity. i still think about jodie all the time. anything i might do in 1981 would be solely for jodie foster's sake. i want to tell the world that i love her. [ male announcer ] this is the story of the dusty basement at 1406 35th street the old dining table at 25th and hoffman. ...and the little room above the strip mall off roble avenue. ♪ this magic moment it is the story of where every great idea begins. and of those who believed they had the power to do more. dell is honored to be part of some of the world's great stories. that began much the same way ours did. in a little dorm room -- 2713. ♪ this magic moment ♪ ♪ this magic moment with olive garden's plebest 2 for $25 yet choose two melt-in-your mouth entrees like new parmesan crusted chicken or tortellini topped

. >> the suspect is identified as mark david chapman. >> hinckley idolized lennon. eve he locks himself in his room at his parents' house. drinks peach brandy. plays his guitar and wallows in his own misery. ♪ sometime during the night, hinckley writes in his diary, john lennon is dead. forget it. it's just going to be insanity. i still think about jodie all the time. anything i might do in 1981 would be solely for jodie foster's sake. i want to tell the world that i love her. i took my son fishing every year. we had a great spot, not easy to find, but worth it. but with copd making it hard to breathe, i thought those days might be over. so my doctor prescribed symbicort. it helps significantly improve my lung function starting within five minutes. symbicort doesn't replace a rescue inhaler for sudden symptoms. with symbicort, today i'm breathing better. and that means...fish on! [ female announcer ] symbicort is for copd including chronic bronchitis and emphysema. it should not be taken more than twice a day. symbicort contains formoterol. medicines like formoterol