When Sandra was 25 she left a happy middle class upbringing in Kent and the modest antiques business she'd set up to go on holiday to Thailand for three months. She fell in love with the country and stayed for two years, teaching English to Thais. When Sandra fell ill she was unable to continue teaching and found herself without any money not even the fare for the flight home. Then she met Robert Locke, who seemed to offer her a way out of her predicament. Robert, a British traveler and heroin addict, offered to pay her 1000 plus a flight to Tokyo if she would smuggle into Japan his personal heroin stash. Sandra, still recovering from dengue fever and desperate to get back to England, accepted. She was given 90 grams of heroin by Locke, which she secreted inside herself, and a ticket to Japan.