13:45DoctorsSeries 15Episode 9: Turn Back TimeBBC One Duration: 28 minutes Fri 12th Apr 2013, 13:45 on BBC One HDChris discovers the story behind Emma and Sam's marriage.ContributorsAnna Redmond:Sarah McVicarDr Emma Reid:Dido MilesChris Reid:Nathan WrightWriter:Jude TindallSeries Producer:Mike HobsonSeries Producer:Peter Eryl LloydProducer:Caroline BrittainGenresDramaMedicalDramaSoapsBrandDoctorsSeriesDoctors: Series 15 Source: BBC Online