Her instincts are telling her something isn't right... On a chilly morning in rural Suffolk, Cassandra Hawke is woken by a gunshot. Her mother is clinging on to her life, the weapon still lying nearby. Everyone thinks it's attempted suicide-but none of it makes any sense to Cass. She's certain there's more to it than meets the eye. With everyone telling her she's paranoid, Cass finds an unlikely ally in student paramedic Holly. Holly's synaesthesia means she's able to sense other people's feelings, and she is convinced something is wrong. Together they try to uncover the truth ... but is there more to Holly's interest than she's letting on? With her family and loved ones at risk, Cass must ask herself: is she ready to hear the truth, and can she deal with the consequences?