In a scene from Radnor's second feature film as writer/director, his character Jesse criticises Olsen's college student Zibby for getting enjoyment from the series of vampire romance novels.
"How can you hate something if you've never read it?" Zibby asks Jesse. "I mean, isn't that like what repressive regimes do? You wanna burn books you don't like?"
"I'm gonna read this book. All of it. And then we can discuss it," Jesse responds.
Zac Efron, Richard Jenkins, Allison Janney and Twilight franchise star Elizabeth Reaser feature in the supporting cast for Liberal Arts, which is showing in US cinemas now and opens in the UK on October 5.