Speaking of Isaac Kappy's dead man's switch, here is a proposal to build a very similar Hammam on Great St James Island.
This is also a document from the Epstein files.
https://www.justice.gov/epstein/files/DataSet%209/EFTA00608663.pdf
https://www.justice.gov/epstein/files/DataSet%209/EFTA00772833.pdf
I'm guessing from the heading on the letter that LSJ stands for little St James. I bet that was what all the concrete was for.
If you search the Epstein docs for keyword Hammam there are 280 results.
Stephen Caplinger is from New Albany, Ohio where Les Wexner's house is located.
https://design.lsu.edu/alumni_profiles/caplinger-stephen/