Cosmo Jarvis (Lady Macbeth) and BAFTA nominee Barry Keoghan (The Killing of a Sacred Deer, Dunkirk), two of the UK and Ireland’s fastest-rising stars, go head-to-head in director Nick Rowland’s gripping feature debut.

In dark rural Ireland, ex-boxer Arm (Jarvis) has become the feared enforcer for the drug-dealing Devers family, while at the same time desperate to be a good father to his autistic five-year-old son. Torn between these two families, Arm's loyalties are tested when he is asked to kill for the first time.

Executive produced by Michael Fassbender and his production company DMC Film, CALM WITH HORSES is based on a gripping novella from Irish writer Colin Barrett, from a collection of Barrett’s short stories which won The Guardian’s prestigious First Book Award.