It was unavailable from Sue, so I decided to look further and found it
online at another source here: http://www.page6.org/st_lib/standard/st0185.php
The Atari ST version of the Eamon "Main Hall" program is also found on
the same site: http://www.page6.org/st_lib/standard/st0050.php
Both are ST disk images and playable using the Atari ST "WinSTon
Emulator" (with TOS) found here: http://www.zophar.net/atarist/winston.html
I managed to get Eamon up and running on my PC using the above
emulator and disk images. Have only played it for a little bit, but
so far "The Crypt Crashers" seems to be an above average Eamon game
and I hope others enjoy it.
Good news! I'll take a look