Lisbon, Portugal – Under a flyover of concrete, alongside a road full of afternoon commuters, a group of people flock around a van. One of them, a woman in a colourful summer dress and a golden necklace, looks like she came to see a show at the nearby theatre. However, just like the man in his unwashed jeans in front of her, she is here for her daily dose of methadone. It will get her through the night. "Drugs started when my father brought me to the south of Portugal, to the Algarve, where I met people who were in the scene," the woman tells Al Jazeera on condition of anonymity.