A young man receives a series of letters engraved with the symbol of a snake eating its own tail. Inside them are an impossible photograph, a key and the name of a street. To reach the end of the mystery, he will first have to discover its origin.
1940
1922
1969
2024
1984
1958
2015
2007
2017
2021
2016
2013
2019
2005
1983
1947
1976
1941
2014
