13:45DoctorsSeries 11Episode 166: Master of the Universe - Part 4BBC One Duration: 30 minutes Thu 28th Jan 2010, 13:45 on BBC One OxfordshireSimon's worst fears are confirmed, as Lewis reveals his true colours. But it could be too late for someone as a gunshot rings out across campus.GenresDramaMedicalDramaSoapsBrandDoctorsSeriesDoctors: Series 11 Source: BBC Online