Sue is half-way along the border in the Mexican city of Juarez - essentially one half of a super-city, adjoining El Paso in Texas, but divided by the border. It's also separated by a 57-mile section of border wall. Thousands of people come and go across the border every day, inhabiting both worlds.

Sue meets a group of professional women who are living proof that people can take pride in what both sides of the border have to offer. They live and work in El Paso, but cross into Mexico several times a week to train with their horses, as part of a sport that strikes fear into Sue's bones.

Sue starts her journey in the Mexican city of Tijuana, on the Pacific Coast, at the western end of the border. On a night out with local student Matthew she tries just about every sample in a Tequila showroom and is left in no doubt the city deserves its reputation as a party town.