Mystery in Space happened on -19-05-04.
The ISBN of Mystery in Space is 1-4012-1558-0.
Mystery Circle happened in 1992.
Tarot Mystery happened in 1995.
Mystery in London happened in 2007.
The Mystery of the Druids happened in 2001.
Eggerland Mystery happened in 1985.
Mystery House happened in 1980.
The Mystery Play happened in 1994-01.
Ancient Domains of Mystery happened in 1994.
House of Mystery happened on 1951-12-01.
Scooby-Doo Mystery happened in 1995.
Please read my answer to a very similar question; Is the mystery spot a real mystery?