Episode: House Guests. Financier Sir Gervase Ewell invites a clutch of international bankers to a conference at his house but, due to the connivance of his idealistic daughter Fleur, three terrorists break in to rob the delegates. Jim, investigating after a man is shot, is also taken hostage with the others whilst Ewell raises the money. Fortunately he is able to call the intruders' bluff - much helped by the greed of one of then.