When the Boat Comes In Season 1 Episode 3 Fish in Wolly Jumpers

Times are hard as the miners strike. Jack, who is now engaged to Jessie, still has money. Tom is desperate for money because Mary is suffering from tuberculosis. He borrows from Jack. Jack sleeps with Dolly, the widowed sister of his war comrade, Matt Headley. Tom threatens to expose him unless he can join Jack's sheep-rustling gang. Jack agrees. Tom is almost caught, but Jack knocks out the policeman. Against Jack's expectations, Jessie condones his activities.