Drayton, a perfectly normal and respectable businessman, is sacked from his job as general Manager of the Dynaflow company after only four weeks in office. The company has been bought out by a Mr. Purvis and the price is suspiciously low. Drayton contacts the I.B. and it doesn't take Smith long to realise that a colossal Purchase Tax swindle is in the making. The trouble is, how to prove it. And that's where Smith has to start playing the waiting game.