>> did steven lynn touch the bod,? >> he did not. >> ai put the questions there, he began to backtrack. >> four people that were there. have told us it was dr. hall ran that performed the resuscitation and you arrived. >> i was there at the beginning. it may have been dr. hall ran who held the knife. i can't remember exactly. i was there before any of the other doctors were there. i was director of the emergency department. >> why do you think that four people would have a different recollection of that night? >> because it's been 35 years since then. i don't remember exactly who held the knife. i certainly thought it was my hand on the knife. it may have been dr. hall ran's and perhaps it was david that opened the chex, but i'm not certain. >> could it have also been dr. hall ran that massaged john lennon's heart and not you? >> no, that i know i did. >> how are you so sure?