"After my uncle died, we discovered he had a second wife whom he spent most of his time with. Literally no one on either side knew this for over 25 years. He also purchased the same prefab house, same furniture, and same everything for each of his wives so their houses mirrored each other (and probably helped him to keep his story straight)."
No, DNA isn't identical, similar yeah..
what Sinah said..
biologically, the same, emotionally, not so much
The houses were close together, and she tossed a burning dishrag from her kitchen window onto the neighbor's roof. It smouldered, sparked a flame, and that was that.
She never told them what happened. Continued to live next to them for decades. Even saw them in church.
Dirty family secret. I didn't learn about it until 20 years after the fact.
Lake Gage in northeast Indiana.