This four part story includes episodes 041, 042, 043 & 044. Inspector Ben Ford makes a visit to Roland Fletcher with a matter he hope he will be able to help Scotland Yard with. He wants to get at a safe and examine its contents and knows that Fletcher is a safe and lock expert. Fletcher wonders if Inspector Ben Ford is setting a Grey Goose trap and wants to inspect the safe without the inspector. He contacts Charlie Austin to help him.