A 110-year-old lemon used by a German WW1 spy to send secret messages from Britain with invisible ink is going on display in ...

A collection of never-before-seen files, photographs and items from MI5's own archives are going on display for the first ...

The lemon, now black and shriveled, helped convict Karl Muller, a German spy in Britain during World War I. It was found by police in his dressing-table drawer, along with another in his overcoat ...

A battered leather briefcase left behind by Guy Burgess when he fled to Moscow in 1951 is among 20 objects from MI5's ...

Featuring declassified documents and objects from MI5's private collection, the exhibition marks the first time the ...

It’s a classic line from a spy movie: “Burn after reading.” For German agent Karl Muller, that advice would have really helped. Muller, a spy who masqueraded as a Russian shipbroker and ...

The intelligence agency’s exhibition at London’s National Archives delves into Britain’s history of spying and includes a 110 ...

Many stories told in the exhibition, however, would not be out of place in a thriller. The lemon, now black and shriveled, ...