In October 2021, a woman in the US state of Arkansas allegedly typed out a simple Facebook message: "Just out of curiosity, would you know anyone in the market for a fully intact, embalmed brain?"The woman was a staffer at Arkansas Central Mortuary Services, and according to prosecutors, the message was sent to an antique dealer in Pennsylvania.A search of his home would later uncover multiple buckets containing human remains, including pieces of brain, heart, livers, skin and lungs.Investigators say the pair were part of an underground community spanning multiple states across the US, made up of both morgue staff...