Set in an idyllic English town, Beth Fairchild has prepared a surprise birthday party for her husband Tom. With most of the village present as Tom is the beloved local doctor, Beth's world is turned upside down when the party is interrupted by the police and Tom is arrested for murder. Beth believes her husband has been wrongly accused but she soon makes some shocking discoveries that cast doubt on his innocence, and she confides her worries in Adam, Tom's best friend from childhood.