Dorothy Arnold
Dorothy Arnold’s disappearance was the most talked-about scandal in Manhattan in 1910. The 25-year-old aspiring writer, a wealthy socialite, went out one day and told her mother she would buy a new evening gown. Instead, she met up with a friend and told her she would walk in Central Park. That was the last time she was seen. Some speculate that she killed herself or died due to a botched abortion because of a rejected manuscript, but those who saw her that day said she was in good spirits, so that seems unlikely.
Bison Dele
Brian Williams, also known as Bison Dele, was known for being eccentric. He bought a boat, Hakuna Matata, in 2007 and announced that he would be sailing from Tahiti to Hawaii with a captain, his girlfriend, and his brother. The boat never arrived in Hawaii, and Miles Dabord, Dele’s brother, was the only member of the group who was ever heard from again. He was arrested in Phoenix two months later for attempting to buy gold with one of his brother’s checks.