Let me ask this, if one outlet has reversed wiring, hot (Black wire) on neutral, neutral (white wire) on hot, or the ground crossed with neutral, wouldn't this cause a hot ground and affect the whole circuit.
I have had run into this a few years ago, in offices that had added additions and the old wiring was not wired the same as the new.
Also have seen where an outlet had been overloaded and/or overheated to where carbon from arcing had caused problem (kind of like a loose connection will corrode and cause a problem.
This may have been addressed and I missed it. Just my 2 cents worth