I Think I Love You : In 1970s South Wales, Petra and her friend Sharon live for David Cassidy. His fan magazine is the girls' Bible and they memorize every word that he sings and writes, in the hope of becoming the future Mrs. Cassidy. But David's letters may not be all his own work. The secret lies with Bill Finn, English graduate turned reluctant pop journalist, whose job it is to compile the Ultimate David Cassidy Quiz. Top Prize: the trip of a lifetime, to meet your one and only love. Over two decades later, bruised by grief, Petra is living with her thirteen-year-old daughter, who has her own teen crush. By sheer chance, Petra discovers that the questions which obsessed her back in 1974 are suddenly very much alive. And Bill, successful in business but never in love, has some confessions of his own . . .