Dr Richard Greville, Chief Psychiatic Advisor to the Home Office, is called in on the case of Matthew Young, who made an assassination attempt on President Reagan (and/or the the Queen, with whom he was staying), by flying a glider with explosives strapped to his body. Greville realises that the real target was an American ex-astronaut, also staying with the Queen. As he gradually unearthes Young's twisted motivations, what seems a bizarre world view becomes increasingly acceptable considering the alternative.

[Personal note: in his file it is noted that Matthew Young studied computer science in the 70s at the Department I currently work in.] ( )