The file 090328_Put_People_First_052.NEF is on a drive named Perky. It hasn't been modified since 28 Mar 2009. There's an .xmp file associated from 16 Sep 2018 but that shouldn't have made any change in the .NEF - confirmed by the modified date. It would have been named on ingest and not likely to have been renamed. I just opened it - it seems perfectly normal, no different from the frames before and after.
I've attached a dump of the metadata.
David