Lazing through hot summer days at their beach hut, life seems just about perfect for the Vincent family - until their peace is shattered by murder. An incident between Paul Vincent and Stevie Clarke - an unbalanced beachcomber known by some as 'The Sandman' - leads Paul to inform the police he believes Clarke is the murderer. This provokes frightening and prolonged reprisals against the family from Clarke. Matters deteriorate further when Leah, Paul's teenage daughter, unwittingly reveals evidence to the police which implicates her own father. This gripping psychological thriller places turbulent emotions in stark contrast to beautiful surroundings, testimony to the fragile nature of tranquility.