Susan Barnett is a 20-year-old part time lab assistant who enjoys reading, relaxing and cycling. She is kind and smart, but can also be very shy and a bit lazy. She is american. She started studying chemistry at college but never finished the course. Physically, Susan is in pretty good shape. She is short with dark skin, brown hair and brown eyes. She grew up in a working class neighbourhood. She was raised by her mother, her father having left when she was young. Susan's best friend is a part time lab assistant called Ria Charlton. They get on well most of the time. She also hangs around with Jerry Murray and Eve May. They enjoy watching sport together.