At thirty-six, he's as hip as a teenager. He's single, child-free, goes to the right clubs and knows which trainers to wear. He's also found a great way to score with women: attend single parents' groups full of available mothers, all hoping to meet a Nice Guy. Which is how Will meets Marcus, the oldest twelve-year-old on the planet.

Nick Hornby is the author of six bestselling novels: High Fidelity; About a Boy; How to be Good; A Long Way Down; Juliet, Naked; and Funny Girl; as well as a novel for young adults, Slam. His non-fiction includes Fever Pitch, 31 Songs, The Complete Polysyllabic Spree and Stuff I've Been Reading. He has written numerous screenplays including the Oscar-nominated An Education and Brooklyn.

Will is 36 and doesn't really want children. But then he comes across 12-year-old Marcus. Marcus is weird - under the influence of his mother, he prefers Joni Mitchell to Nirvana. But Marcus is also sharp for his age and knows something about Will that he can definitely use...