Stephen Chbosky, best-selling author of 'The Perks of Being a Wallflower,' talks about his new book, 'Imaginary Friend'

ANY PERKS OF BEING A WALLFLOWER FANS HERE?: It has been 20 years since Stephen Chbosky wrote the best-selling, "The Perks of Being a Wallflower." He went on to direct the film version, too. Now, Chbosky spoke to ABC7's Kristen Sze about his new book, "Imaginary Friend."