In 2017, a man claiming to be a member of the ultra-wealthy Saudi royal family, named Prince Khalid Bin Al-Saud, entered into talks with real estate developers to make a $400 million investment in an iconic luxury hotel on Miami Beach.

He certainly looked the part of rich royalty. For starters, the "prince" lived in the penthouse condo of a luxury high-rise — he claimed to own the whole building — on Fisher Island, the exclusive private island neighborhood located just off the coast of Miami. (With celebrity residents that have included Oprah Winfrey and Andre Agassi, the island boasts the richest zip code in the U.S., with an average income of $2.5 million as of 2015.)