Blaketon is worried about his up coming retirement, he discusses it with Alf and tells him he has decided to apply for an extension of service. There are major thefts from a fur factory which leads to a police chase aboard a train, but only two out of the three men are caught. The other is found later when his son reluctantly leads the police to him. Claude has a metal detector and thinks he's struck gold! (thetvdb.com)