his signature is at the bottom. >> yes, that's my handwriting. >> whose words are those? >> they're not mine. >> whose words are they? >> i'd rather not say. >> in the summer of 1986, henry was in prison here when he said an associate of wayne williams came to see him and told him what to write. >> when you said, i could not i.d. the face of wayne williams as the man i saw with nathaniel cater, are those your words? >> those are words i was told to say. >> by? >> i'd rather not say. it might cause problems. >> could you i.d. the face of wayne williams? >> the person i saw holding nathaniel cater's hand was wayne williams, the man that was convicted of it. >> in fact, henry had passed a lie detector test before he took the witness stand. when his visitor came to see him, henry was serving five