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.
1993
1928
2018
2002
2016
2010
2021
2017
2003
2000
1922
1986
2006
2008
1971
1997
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