I don't see anything mysterious about that image, Stanley Armour is shown at the beach with the same child - at about the same age. Doesn't tell us who else was there, or who his parents were.
In HI they call those flower trees plumeria, and it does look like one. Kids do Halloween in HI although IIRC it doesn’t seem as big there (when I was there) as on the mainland.
I don't see anything mysterious about that image, Stanley Armour is shown at the beach with the same child - at about the same age. Doesn't tell us who else was there, or who his parents were.
I’d stake my life on the fact those 2 were not in front of that flower tree for the photo. I am not surprised that the tree is easily recognizable as one that grows in Hawaii. That was the intent.