Justin Bieber's 'Believe': Director Jon Chu on the Singer's Challenging Year (Q&A)

"Getting to the heart" of a trying time was the focus of the follow-up to "Never Say Never," out Christmas day. Jon Chu has seen Justin Bieber reach his greatest heights and lowest lows. As the director of Never Say Never, the pop star’s 2011 documentary which grossed nearly $100 million, Chu filmed Bieber’s burgeoning career from obscurity to superstardom. Now helming its follow-up Believe (out Christmas Day), he not only got to witness Bieber mania reach an even more massive global scale, ...