One June night, in a small town gripped by a sweltering heat wave, a young man is forced off the road and into the river. Robert Bell, a disillusioned local journalist with a dry sense of humour and an escalating drink problem, leaves behind the banality of his quiet office to investigate the mysterious death. Simmering racial tensions in the town threaten to boil over and local Serbian immigrants become the easy targets for blame. Robert's own brother, Frank, is the investigating police officer, but they have a problem sharing information. And another darker, hidden problem; Robert's in love with the one woman he can't have: Frank's wife Irene. Their affair continues through the stifling heat until one morning Irene vanishes. Is her disappearance somehow linked to the young man's death? Soon Robert is drawn deeper into the desperate hunt for a murderer and, as the storm clouds gather, finds some uncomfortable truths about his seemingly quiet community.