The Airmail Mystery was created on 1932-03-28.
The duration of The Airmail Mystery is 3.75 hours.
The address is just the address. What makes it airmail is writing "airmail" on the envelope and paying airmail postage.
Airmail is a noun, adjective and verb, not an adverb.
Airmail is in the air
The address is just the address. What makes it airmail is writing "airmail" on the envelope and paying airmail postage.
No Mystery was created in 1975-01.
The Great London Mystery was created in 1920.
Mystery Walk was created in 1984.
The Sirius Mystery was created in 1976.
The Heirloom Mystery was created in 1937.
The Staircase - Mystery - was created in 1978.
The Hordern Mystery was created in 1920.