Discover the story
The Mystery Pack with stamps, story and special lens which reveals a hidden image.

The New Sherlock Holmes Stamp Issue and Mystery Pack. Can you solve the mystery before the great detective?

Are you a budding detective?
With the new stamp issue from Guernsey Post you have the chance to follow in the footsteps of the world's greatest detective in a new adventure on the island of Alderney.

By reading the story, studying the pictures and stamps for clues you can crack the code and beat Holmes to work out whodunnit?

Explore the stamps
Order now online
The mystery pack
Whodunnit?