Sounds like the makings of a mystery: A cache of diamonds was found in a trunk after sitting undiscovered for years.

Jennifer Grant, an Agatha Christie fan, bought a traveling trunk at an estate sale at Greenway, Christie's holiday home. The trunk was surprisingly heavy because of a lockbox bolted inside. There was no key.

"I almost did not want to open it because then the mystery would be over," Grant told the BBC. "When friends came round we would tip the trunk from one side to the other and listen to hear if anything rattled. If you were very quiet you could just about hear something sliding inside."