i'm convinced of that. >> jim lovell, you were in the ambulance with oswald.t what stage did you become aware he had not only killed that philadelphia but the president. at what stage before he was shot did you know that? >> captain fritz had just come back from the school book depository where the found the rifle and empty hulls under the window and so forth. he'd also found out that oswald was missing from the school book depository without permission to be gone. so he came in and getting ready to send people in different directions to look for him when somebody told him, well, the man that lovell's talking to has a name similar to what he was asking about. he opened the door to the room where i was talking to him and asked me what his name was. and i told him. then he asked lee, where do you work? he said the school book depository. and he said, well, you're the man i want. so i lost my prisoner. he took him and went into his office with him. that's the last time i questioned him. but that was the first inkling i had he would be a suspect in the assassinati

jim lovell joins me along with his granddaughter, his coproducer on a documentary "capturing oswald."e another piece of history in many ways. when you yourself see that famous footage, infamous footage, what goes through your mind even though now 50 years later? >> about the only thing i can think of is, i was hoping to save my prisoner and i didn't do it. that probably goes through my mind more than anything else. >> do you feel a sense of guilt, even though you have no reason, to but do you feel that? that had you managed to keep him alive we may have been able to answer all the conspiracy theories that have raged ever since? >> no doubt about it had we kept him alive the conspiracy people would have had a hard time bringing up a lot of the things that the bring up. so yes, indeed. i would have really preferred to have kept him alive. >> you could have also been killed yourself as jack ruby burst through that group of people and came at you? >> as a police officer you have to act. many people ask what goes through your mind. you don't stop and think because if you stop and think you

he was handcuffed to dallas police dective jim lovell. >> i jerked back to pull him behind me. instead of moving him, i turned his body a little bit. instead of hitting m dead center, hit him threinches to the left of the naval. >>eporter: you were trng to protect oswald. >> i was trying to pull h behind me. but i didn'tave any leverage. >> reporter: thereere phone threats against osld. >> i told him i hoped if anybody shot ahim that they were as good shot as he was meaning of course they'd hit him a not me. he laughed and said, nobody's going to shoot at me. reporter: detective lovell was the last one to talk with oswa. but inhe twists and turns of november 22nd, he was also one of the first. 45 mutes after the president was sh word came that a daas police officer hadeen shot and killed. the suspect, lee harvey oswald. detective m lovell was assigned t case. >> lovell qstioned oswald, unaware that moment ofis coection to the presidt's shooting. >> i remember a lot abt him. heas calm and collected, just like you and i are sitting here the talking. he answered my questions immed

. >> accused killer lee harvey oswald was gunned down while handcuffed to detective jim lovell. >> ipted to turn odds wald behind me but i was too close to him. >> we'll never know what oswald was going to say. was he just a lone nutcase? >> a trial moois have answered questions of conspiracy but with oswald dead investigators focused on ruby. how was he able to get that close to the most wanted man in the world? >> because all the cops in dallas liked him because he gave them free stuff including hookers. >> the actions by ruby in treating oswald were not spontaneous and that he probably had assistance. >> when andy purdy served on the commission he examined ruby's unusual access to police headquarters. >> i believed that officer dean who was in charge of security let jack ruby into the basement. >> patrick dean's involvement has remained a question. >> he had failed a polygraph back at the time of the assassination. information i'm not sure was turned over to the fbi. >> but ruby's ties with law enforcement went beyond dallas. >> ruby works for the fbi and it was in chicago, no que