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Case Sensitive
When the bodies of a mother and her young daughter are found in the bathroom of their luxury home, new DS Charlie Zailer and her junior colleague DC Simon Waterhouse investigate. The pair immediately clash, disagreeing over whether the case is a murder-suicide or something even more sinister. Elsewhere, young mother Sally Thorne tells her best friend that she had an affair with the husband of the dead woman, and her friend warns her to stay away.
After a mother and daughter are found dead in strange circumstances, a mysterious young woman calling herself Esther visits the crime scene. DS Charlie Zailer and DC Simon Waterhouse track the woman to a bird sanctuary but she disappears, leaving behind only a photograph of an unknown mother and child. Who are they - and what is their connection to the dead family? Then a woman's body is found floating in the river and Sally begins to realise that she is in terrible danger.
