The Gone Girl of 1926 (Agatha Christie’s Disappearance)

In December 1926, the police found a Morris Cowley car abandoned on the edge of a chalk quarry in Surrey. The headlights were on. A fur coat and a driving license were left on the seat.
The license belonged to Agatha Christie.
The Queen of Crime had vanished. It sparked one of the biggest manhunts in British history. Over 1,000 police officers and 15,000 volunteers scoured the countryside. They dredged lakes. They flew biplanes overhead. Sir Arthur Conan Doyle (the creator of Sherlock Holmes) even took one of Agatha’s gloves to a psychic to try and find her.
The public was convinced she had been murdered by her husband, Archie Christie, who had recently asked her for a divorce because he was in love with a younger woman named Nancy Neele.
Eleven days later, Agatha was found. She wasn’t dead. She was staying at a luxury spa hotel in Harrogate, dancing the Charleston and reading the newspaper reports about her own murder.
Here is the kicker: She had checked into the hotel under the name “Teresa Neele”—the last name of her husband’s mistress.
Was it a “fugue state” caused by trauma, as she claimed? Or was it the most elaborate, petty, and magnificent revenge plot in literary history—designed to frame her cheating husband for murder and humiliate him globally?
She never spoke of it again. She took the secret to her grave, leaving us with the only mystery she refused to solve.