Serena returns to her hometown for the first time in seventeen years, stirring up memories of the secret she has concealed from her husband and daughter. Serena is haunted by the memory of a teenage love-­affair with her teacher, Mr. Halnsley - an affair that ended with his brutal murder. Poppy returns to the same hometown after seventeen years in prison. Poppy was found guilty of murder -­‐ a crime she still insists she did not commit. And now she’s out, she knows the only way to get her life back is to find Serena and force her to admit the truth about what happened that night. (thetvdb.com)