First broadcast 5th February 1980.

Chalky visits Zoë, the girl who seemed to be supplying Kobahl with the money he was losing at the casino.

Larry Lamb ... CPO Chalky White
Philip Locke ... Commander Lloyd
Maurice Colbourne ... Lieutenant Commander Kobahl
Cherie Lunghi ... Stephanie
Richard Kane ... Winterman
Nell Campbell ... Zoe Summers
Julia McCarthy ... Housekeeper
Freddie Fletcher ... MAA Toberman (as Freddy Flecher)
Peter Kinley ... Radio Operator