 Series four begins with the suicide of a girl named Sophia (Amberley Gridley) while she is high on MDMA at a club Thomas works at.A police inspector (Pauline Quirke) questions the entire gang, and Thomas is expelled by the new headmaster (Chris Addison) for his unseemly connection to the incident.Thomas gives into temptation and sleeps with another girl, resulting in the break-up of him and Pandora.