In grad school, I took a workshop with Scott Spencer, whose excellent novel 'Endless Love' had just been turned into a film. We students were in awe of his prestige. Yet Scott himself was chagrined; for good reason, he hated the movie.

My agent had warned that, while a fine film would do my profile a world of good, a bad one wouldn't help me at all, and I suspected she was soft-pedalling the latter possibility. The effect of a truly execrable adaptation is worse than neutral. The stink rubs off.

Awful film adaptations follow novelists for the rest of their lives. An atrocious movie of 'We Need to Talk About Kevin' could have stigmatised the book, aggrieved the novel's fans, and blighted my reputation forever.

Lionel Shriver Quotes