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 ...

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

Spy used pen nibs dipped in lemon to write invisible messages to his counterparts. He relayed his secrets in between lines of ...

Burn after reading.” For German agent Karl Muller, that advice would have really helped. Muller, a spy who masqueraded as a Russian shipbroker and ...

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 MI5’s first ever public exhibition. The blackened and flattened fruit ...

It's the stuff of spy novels, except in this case it's the stuff of actual spycraft. A new exhibit opening in London features ...

used pen nibs dipped in lemon to write invisible messages to his counterparts. He relayed his secrets in between lines of regular ink in what appeared to be otherwise unremarkable letters.

used pen nibs dipped in lemon to write invisible messages to his counterparts. He relayed his secrets in between lines of regular ink in what appeared to be otherwise unremarkable letters.

PQB News/VI Free Daily editor Philip Wolf can be reached by phone at 250-905-0019, or by email at [email protected].

The destroyer of my attention span is currently angrily pinging at me again, jealous that my laptop is getting so much ...