A few months ago, the U.K.’s Royal Mail released a set of stamps inspired by the works of Agatha Christie, one of the greatest mystery writers of all time, in honor of the 100th anniversary of her first detective story – The Mysterious Affair at Styles, which introduced Hercule Poirot, the famous fictional Belgian detective. But these are no ordinary stamps.

Each of the six designs is based on one of Christie’s popular novels and each contains hidden clues pertaining to its respective title — Murder on the Orient Express, The Body in the Library, And Then There Were None, The Murder of Roger Ackroyd, A Murder is Announced, and the aforementioned The Mysterious Affair at Styles.

Check out images of all six designs here below.

An exciting new set of stamps have been released by the UK’s Royal Mail that should have collectors and fans of fantasy itching to pick them up.

The stamps include many characters of fantasy lore from books and movies and legend, known for their abilities as witches, wizards, and enchanters. Featured is Albus Dumbledore and the Dark Lord Voldemort from J.K. Rowling’s juggernaut Harry Potter books and movies series, Aslan and The White Witch from C.S. Lewis’s The Chronicles of Narnia books and movies, Nanny Ogg and Rincewind from Terry Pratchett’s Discworld book series, and finally, Merlin and Morgan Le Fay from the legend of King Arthur.

You can see all of the stamps by clicking on over to the other side now!