LeedspoliceconstableJoGillespie(SheridanSmith)isdevastatedwhenherhusband,undercoverofficerRyan(KennyDoughty),iskilledinsuspiciouscircumstances.AsshebattlestostaystrongforthebenefitofdaughterMelly(HonorKneafsey)andstepsonHal(OliverWoollford),Joisurgedbyherbosses,DCIWillHepburn(DouglasHenshall)andChiefConstableCarolynJarecki..eee