When Terry helps out a girl who was being mugged, she repays him by giving him a couple of tickets for a holiday on the Orient Express. The girl turns out to be Nikki South,the daughter of Jack South, a big time crook who has died, and has left a large amount of money in a Swiss bank account. When Arthur finds out , he cons the other ticket off Terry and the two of them set off for Venice accompanied by several other travelers all of whom are also interested in the Swiss bank account, but the only clue to the money is a locket that Nikki carries around her neck, and a picture of the 1971 Arsenal cup winning football team. (thetvdb.com)