When the Boat Comes In

Having made money from his deal with the oil company, Jack is mixing in London high society. His land agent, Frank, asks Jack to broker the sale of an expensive emerald necklace to Morty Black. The necklace is owned by Philip Martin whose sister, Jane, is unbalanced and would kill to get the necklace for herself. The sale goes ahead. When Jack learns that Morty paid off the mobsters who were after him, he waives his share of the price.

Lady Caroline invites Jack to visit her in Northumberland. Sarah is seeing Stan Lidell. Jack helps shopkeeper Manny Goldstein who is being persecuted by Blackshirt thugs. At a function given by Caroline's husband, Edward Mostyn, Jack argues with the local Fascist leader, Hector Smith-Jameson, which attracts him to socialist guest, Tania Corley. Jack buys a share in Manny's shop and when the thugs attack it again, he forces Smith-Jameson to pay compensation or face prosecution, and then exposes him for having paid money to a Jew.

Tania's mother, Lady Leamington, gives a party to raise funds for the victims of Franco in the Spanish civil war. Billy treats Bob Randall, son of Jack's old sergeant-major Fred, wounded fighting for the Spanish Republicans. Jack considers himself in debt to Fred who once saved his life. Jessie and Billy get Fred to persuade Jack to smuggle guns to the Republicans. Using a pleasure cruise as cover, Jack sails for Spain with Tania, Jessie, Billy and communist Nigel Scott-Palliser.

Jack learns from Ceddie Corley that Scott-Palliser is planning to have him arrested for gunrunning. He sends Tania home, warns the ship's captain and goes ashore with the ship's steward, Raoul Savory. Jessie is shocked to discover that Scott-Palliser plans to give the guns to the Communists and not the Socialists. Raoul diverts the Communist convoy. Jack, Jessie, Billy and Raoul set off to deliver the guns to the socialists. They fight off Franco's Moorish cavalry, but Scott-Palliser is lying in wait and shoots Jack.