This book is all about Georgie — I’ve never seen so many shoals of first-person pronouns in one place, and by the end I was desperate for Georgie to find her shark, so she (and we) could move on. But it’s also revealing about the nature of all phobias where an irrational fear is transmuted into an irrational obsession with the thing feared. To conquer hers, Georgie begins by doing a scuba-diving course in Thailand. When she first dives in to the Gulf of Thailand, ‘my insides retreat. I prepare for the worst — but nothing happens’. Having trained herself to think about swimming among fish, she feels remarkably untraumatised. Being behind the ‘screen’ of her diving mask is a huge psychological help: it makes her feel she’s watching it all on television. What’s more, the fish take no notice of her.