Gemstones from the crown jewels were hiding in a biscuit tin at Windsor Castle for safekeeping during World War Two, a BBC documentary will expose .~ ATAGEND
It was embed below a secret exit under the orders of King George VI to foreclosed the trinkets falling into Nazi hands.
Details of the whodunit, unknown by the Queen, were discovered in letters from Sir Owen Morshead, the imperial librarian, to Queen Mary, the mother of George VI.
The Queen was told the details for the first time by presenter Alastair Bruce.
The striking tale was uncovered for the BBC One programme by Oliver Urquhart Irvine, the librarian, and deputy steward of the Queen’s Archives.