An unforgettable book for fans of Henry Marsh and Atul Gawande about how we lose ourselves and those around us - and how we can be found again. Who do we become when our minds misbehave? If a loved one changes as a result of a brain disorder, are they still the same person? Could a brain disorder enhance your identity rather than damage it? From dementia and brain injury to sleep disorders, coma, and multiple personality disorder, leading neurologist and journalist Dr Jules Montague explores what remains of the person left behind when the pieces of their mind go missing. Along the way she answers fascinating questions about how we remember, think and behave. Why do some memories endure and others fade? Why do you sometimes forget why you went into a room? And what if rather than losing memories, your mind creates false ones - are they still yours, and do they still make you, you?.