13:45DoctorsSeries 12Episode 22: An Officer and a GentlemanBBC One Duration: 30 minutes Wed 5th May 2010, 13:45 on BBC One North East & CumbriaCan Rob risk his reputation and blow the whistle on an incompetent colleague? Imogen helps her friend find a way out of his arranged marriage.ContributorsRob Hollins:Chris WalkerSgt Dean Frater:Thomas CraigRajiv Mehta:Waleed AkhtarImogen Hollins:Charlie ClemmowDr Heston Carter:Owen BrenmanJulia Parsons:Diane KeenKaren Hollins:Jan PearsonProducer:Fiona PandelusWriter:Jane MarlowProducer:Mike HobsonProducer:Neil McLennanGenresDramaMedicalDramaSoapsBrandDoctorsSeriesDoctors: Series 12 Source: BBC Online