When a bomb explodes outside London's Academy of Ballet, the police suspect a terrorist group is responsible. But the pieces don't fit and DCI Silver is struggling to find any suspects. Recovering from a terrible tragedy of her own, Claudie is still suffering from blackouts. When her friend Tessa dies in the bomb blast, Claudie is gripped by the inexplicable certainty that she is involved if only she could remember. As Silver dives deeper into the investigation, he is shocked to discover that he too is linked to the explosion. Can Claudie and Silver get to the heart of what is real and what isn't before something terrible happens again?