Wilt is back - in form, and in a good deal of trouble.Henry Wilt is still teaching at the Fenland Tech, attempting to drill English into plasterers, dozing through tedious committee meetings and occasionally getting mildly plastered in 'The Pig in a Poke' with one of his few bearable colleagues. But the even tenor of his days is rudely interrupted when the shadow of drug dealing flickers across the Tech. Suddenly Wilt becomes the target of suspicion. His colleagues believe him to be responsible ...