Twice Shy

In this adventure based on Dick Francis' thriller, you play the part of Johnathan Derry, physics teacher at East Middlesex Comprehensive. For reasons which will become clear as you progress through the adventure, you become the custodian of a set of cassette tapes. It is up to you to find out what they do. However, there are some other characters whose concern for the health of others, particularly Johnathan Derry, is far from paramount. Perhaps they know what's on the tapes...