The 1990 date of publication is an estimate; an advertisement for the game is included in issue 59 of Your Sinclair from November 1990.
Many of the archived versions of this game do not include the second part of the adventure.
A version of this missing instalment has been recovered from the version that was given away with issue 5 of the SAM disk magazine, Enceladus. See here for details.
[+] Users who have solved this game
[+] Users currently playing this game
The copies found on the internet unfortunately only contain the first part of the game.