~Grin~
'Excessive deviation from ze official story vill not be tolerated!'
If you're not even aware of the problems with Mr. Brewer's story, Mr. O'Meara, then you haven't done your homework. I'm not here to do your homework. You do your homework.
So, Roberts was wrong and Brewer was lying

Oswald rushed into the rooming house for no particular reason, strolled on down to the Texas Theater and paid to go in.
Unfortunately for him, Tippit was murdered while he was in the cinema and, somehow, it was known Oswald would be there and fresh for framing.
How am I doing so far?