Alaska Passage (1959)

Al Graham and Gerard Mason are partners in an Alaskan trucking company. They quarrel over expenses and losses. Graham has fallen for Tina Boyd, the cashier at a restaurant. Mason's wife, Janet, shows up and makes a play for Graham, and since they were lovers before she threw him over for Mason, Graham and Janet resume their affair. Mason learns of this, and Janet shoots him and forces a truck-mechanic to help her getaway. Graham speeds after them knowing there has been a landslide and hoping to prevent an accident.