She knows your mind, she possesses your thoughts. What will she take next? 'I think I can help you…' Beth lives by Camden Lock with her partner Sol and their daughter Fern. Life is peaceful, but Beth is troubled by increasing unease. So she goes to therapy – with Dr Tamara Bywater. Soon their sessions become the highlight of Beth's week. But Beth is in over her head before she realises that Tamara might not be all she seems...