Crappy source, but the info in this article seems legit and is a crazy read.

Presumably Seckel met Epstein through his sort-of wife, Isabel Maxwell — the sister of alleged Epstein enabler Ghislaine Maxwell — whom he had married in 2007, while apparently still married to someone else.

“I was never able to establish to my satisfaction that Seckel had died.” Though he didn’t devote a lot of time to the question, he continued, “I always had my suspicions that maybe he faked his own death; it would have been in character.” Others who knew Seckel also have their doubts that he’s dead and, in fact, it’s difficult to verify; authorities in France did not respond to inquiries.

Dmitry Rybolovlev is the Russian oligarch who sold the painting “Salvator Mundi” to Mohammed bin Salman for $450 million in 2017. He also bought a Palm Springs mansion from Trump in 2008 for $30 million dollars over it’s appraised value. The same mansion both Trump and Epstein coveted in 2004.
There’s an article that goes into more detail here. It’s fairly dismissive of the whole conspiracy, but I’m not so sure.