Discover if someone has died in your house

I live in a house that was built in late 1950s, sawn into 5 pieces, moved to the current location several miles away, put on a foundation.

we thought there might be a filled in pool in the basement. It wasn’t. We discovered it when we redid the floors all the way down to the foundation.

Just a poured foundation. Pretty bubbly and badly done on certain walls.