It is 2pm. Mr Oswald (blue arrow) has just been brought into the Homicide Office. Behind the door the officer is about to open (purple arrow) is Mr Bill Shelley, who is giving his first affidavit statement.

Mr Shelley's presence delays Mr Oswald's entry into that room, which must be cleared.
Now! Two things to note here:
1----------------------Mr Oswald is about to see Mr Shelley, who is his supervisor at the Depository
2----------------------Mr Shelley's first affidavit makes no mention of Mr Oswald
Here's what will happen:
--------------Mr Shelley will be asked to give a second affidavit, one that discusses Mr Oswald. Mr Shelley will tell whoever is taking this second affidavit that Mr Oswald was near him on the front steps at the time of the shooting.
--------------This information being unacceptable to the 'investigating' authorities, that second affidavit will tell us all about Mr Oswald with the exception of the single most crucial question: Did Mr Shelley see Mr Oswald at the time of the shooting?
That question will be completely fudged through strategic omission.
--------------Mr Oswald, meanwhile, in his first interrogation in the back room will tell Captain Fritz that he went outside to watch the P. Parade. And he will mention Mr Shelley, whom he has just seen in what is now his interrogation room and is therefore someone who can be easily asked, as a witness who can back up this claim.
--------------The first OFFICIAL interrogation report for that session will
a) fudge the all-important question of where exactly Mr Oswald claimed to have been at the time of the shooting ("on the first floor")
b) make NO mention of Mr Shelley (whom Mr Oswald mentioned)....... but at the top someone will write in the name of He Who Cannot Be Named in the report itself, i.e. a man whom Mr Oswald named as a supporting witness for his alibi for the shooting
