Calm with Horses (2019)PlotDouglas 'Arm' Armstrong has become the feared enforcer for the drug-dealing Devers family, whilst also trying to be a good father. Torn between these two families, Arm's loyalties are tested when he is asked to kill for the first time. RATING 6.8 6k Votes GENRECrime, Drama STARSCosmo Jarvis, Barry Keoghan, Liam Carney