When Jimmy is brutally murdered by two hooded figures, the residents of the Serenity House tower block are witnesses to the killing but, fearing retribution, are too scared to give detectives any information and the police investigation is going nowhere. One year later, someone has decided to take justice into their own hands. Picked off one by one, the tenants of the tower block are under threat from a mystery sniper who has set deadly traps throughout the building keeping them prisoners in their own homes. Unsure of why they have been targeted, the group put their differences aside and undertake daring attempts to escape the building. But with every exit leading to another death, will they ever escape? The movie stars Sheridan Smith, Russell Tovey and Jack O’Connell. It hits UK cinemas on September 21st.