Oswald confessed to his own wife on the night of the attempt before the general public was even aware it had happened.
Marina said a lot of things.
"We cannot ignore, however, that Marina Oswald has repeatedly lied to the Service, the FBI, and this Commission on matters which are of vital concern to the people of this country and the world.” - Norman Redlich to Lee Rankin
He had photos of Walker's home.
No, they were in Ruth Paine's garage.
He left a note explaining to Marina what to do in case he was arrested or killed.
No mention of Walker or shooting.