Mags Barkworth still suffers the effects of a life-changing tragedy over a decade ago. She knows her husband loves her. She knows he would never do anything to hurt her, or their daughter. But what if the voice in her head, the one she's pushed away with therapy and anti-depressants, is telling the truth? What if it's all a lie? When Tam, their daughter, draws an uncannily detailed picture of a place she's never been, Mags's life starts to unravel. But even in her most paranoid moment, Mags could never have guessed the secret she is destined to uncover.