The Vanishing Prof Vanderkopf (Postcard #4)

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Hint 1

This is an ideal time to review your previous correspondence.

Hint 2

The back of postcards 1, 2 and 3 have patterns and markings along their borders.

Hint 3

Overlay the patterns on the backs of postcards 2 and 3 on their matching patterns on the front of postcard 4. Then align the coloured line at the bottom of the back of postcard 1 with the lines of the same colour on postcards 2 and 3. This highlights a small rectangular area on the map.

Hint 4

The overlaid postcards highlight the ‘Ambassade d’Allemagne’, which is where Dr Dante was planning to go next. By translating this into English, and noting the year these events occurred, you can deduce her motive.

Solution

Dr Dante planned to smuggle the Professor’s stolen papers, containing the scientific breakthrough, to the Nazis – via the Ambassade d’Allemagne (the German Embassy).

Once you have solved this clue, read the full reveal.

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