This is an intelligent and well written book which explains the dangers of quantum mechanics. The main Character, John Ringer, a theoretical physics professor meets an old flame, though she claims to be someone else. At the same time, Ringer is receiving odd texts on his phone and a man called Harry is in hospital suffering from a new illness called AMD, the symptoms of which are false memories and hallucinations. The story also randomly jumps back and forth in time to give us fascinating views into the life of Erwin Schrödinger and Schumann.