When 15-year-old Tyler’s family moves north, to his dismay, from London to Yorkshire, he meets a Geordie girl called Spider at the Ilkley Lido who asks him to teach her to swim. He agrees to do so for a fee, in the hope of saving up for new headphones. Spider’s life is very unlike Tyler’s and, as the differences emerge, Tyler has to deal with his parents’ disapproval of his new acquaintance as well as the jealousy of his unempathetic would-be girlfriend. But he realises that Spider needs help, and he is the only person willing to give it, whatever the (sometimes comical) trouble it gets him into. This story about homelessness is truthful and compelling, and Duffy has a talent for imparting serious ideas entertainingly.