LeedspoliceconstableJoGillespie(SheridanSmith)isdevastatedwhenherhusband,undercoverofficerRyan(KennyDoughty),iskilledinsuspiciouscircumstances.AsshebattlestostaystrongforthebenefitofdaughterMelly(HonorKneafsey)andstepsonHal(OliverWoollford),Joisurgedbyherbosses,DCIWillHepburn(DouglasHenshall)andChiefConstableCarolynJarecki(GeraldineJames),toleaveittoherfellowofficerstofindthekiller.ButwhenthemurderenquirystartstouncoversomedangeroussecretsaboutRyan,Jo'sfaithinthepolicefamilyofwhichshehasbeenapartforsolongisseverelytested.Nolongersurewhototrust,JoembarksonherowninvestigationwiththehelpoffriendandcolleagueJackClark(MatthewMcNulty),butastheycloseinontheidentityofRyan'skiller,Jo'shuntforthetruthwillputherownlifeindanger.WrittenbyMattCharman(SuiteFrancaise,BridgeofSpies)anddirectedbyMichaelSamuels(TheFear,AnyHumanHeart),BlackWorkisapowerfulcrimethrillerthattakestheaudienceintothemurkydepthsofundercoverpoliceworkandtellsthestoryofawomanwillingtoriskeverythingtoprotectherfamily.