13:45DoctorsSeries 21A Little KnowledgeBBC One Duration: 28 minutes Mon 13th Jan 2020, 13:45 on BBC One Northern Ireland HDValerie’s DNA results have arrived, but what will they tell her? Show more ContributorsValerie Pitman:Sarah MoyleRob Hollins:Chris WalkerRuhma Carter:Bharti PatelBear Sylvester:Dex LeeClaire Foster:Claire JonesDean Kane:Aaron Thomas WardWriter:Stephen McAteerDirector:Kodjo TsakpoProducer:Gail EvansExecutive Producer:Mike HobsonGenresDramaMedicalDramaSoapsBrandDoctorsSeriesDoctors: Series 21 Source: BBC Online