At just 22 years-old, Kaitlyn Dever has already been acting for more than a decade, amassing a long list of credits in both film and television, including acclaimed independents like “Short Term 12,” and “The Spectacular Now.” But this year is proving to be a particularly special one for the young actress. She starred in Olivia Wilde’s critical darling coming-of-age directorial debut, “Book Smart,” and now she will appear in “Unbelievable,” a limited series based on true events, in which Dever plays a young woman accused of lying about a rape. Dever describes the role as the the biggest challenge of her career to date.